./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/length_test03-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/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_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/length_test03-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e9221de91e231efa38b63f264828813e89f68c8ac306a629b3513c0e7bf1ed0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:53,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:53,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:19:53,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:53,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:53,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:53,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:53,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:53,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:53,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:53,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:53,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:53,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:53,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:53,952 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:53,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:53,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:53,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:53,953 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:19:53,954 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:19:53,954 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:19:53,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:53,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:19:53,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:19:53,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:53,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:53,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:53,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:53,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:53,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:53,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:53,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:53,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:53,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:53,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:53,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:53,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:53,977 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:53,977 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_c22569d2-660a-4877-a432-975f5459bd76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e9221de91e231efa38b63f264828813e89f68c8ac306a629b3513c0e7bf1ed0 [2023-11-06 22:19:54,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:54,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:54,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:54,343 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:54,344 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:54,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-ext2/length_test03-1.i [2023-11-06 22:19:57,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:57,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:57,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/sv-benchmarks/c/memsafety-ext2/length_test03-1.i [2023-11-06 22:19:57,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/data/acd2d5069/b2c2cd71138c4a9792a33f49bd6c649e/FLAG11acb4603 [2023-11-06 22:19:57,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/data/acd2d5069/b2c2cd71138c4a9792a33f49bd6c649e [2023-11-06 22:19:57,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:57,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:57,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:57,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:57,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:57,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:57" (1/1) ... [2023-11-06 22:19:57,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23428a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:57, skipping insertion in model container [2023-11-06 22:19:57,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:57" (1/1) ... [2023-11-06 22:19:57,874 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:58,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:58,234 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:58,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:58,332 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:58,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58 WrapperNode [2023-11-06 22:19:58,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:58,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:58,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:58,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:58,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,386 INFO L138 Inliner]: procedures = 123, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 102 [2023-11-06 22:19:58,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:58,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:58,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:58,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:58,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:58,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:58,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:58,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:58,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:58,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:58,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:19:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:19:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:19:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:19:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:19:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure append [2023-11-06 22:19:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2023-11-06 22:19:58,646 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:58,648 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:59,160 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:59,168 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:59,168 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:19:59,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:59 BoogieIcfgContainer [2023-11-06 22:19:59,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:59,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:59,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:59,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:59,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:57" (1/3) ... [2023-11-06 22:19:59,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae395cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:59, skipping insertion in model container [2023-11-06 22:19:59,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (2/3) ... [2023-11-06 22:19:59,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae395cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:59, skipping insertion in model container [2023-11-06 22:19:59,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:59" (3/3) ... [2023-11-06 22:19:59,180 INFO L112 eAbstractionObserver]: Analyzing ICFG length_test03-1.i [2023-11-06 22:19:59,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:59,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2023-11-06 22:19:59,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:59,244 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;@190874cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:59,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-06 22:19:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 67 states have (on average 2.029850746268657) internal successors, (136), 126 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:19:59,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:59,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:19:59,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:19:59,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-06 22:19:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442318578] [2023-11-06 22:19:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:59,456 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 22:19:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442318578] [2023-11-06 22:19:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442318578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:59,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520841200] [2023-11-06 22:19:59,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:59,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:59,501 INFO L87 Difference]: Start difference. First operand has 130 states, 67 states have (on average 2.029850746268657) internal successors, (136), 126 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 22:19:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:59,730 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2023-11-06 22:19:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:59,733 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 22:19:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:59,745 INFO L225 Difference]: With dead ends: 167 [2023-11-06 22:19:59,745 INFO L226 Difference]: Without dead ends: 165 [2023-11-06 22:19:59,747 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 22:19:59,752 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 53 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:59,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 172 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:19:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-06 22:19:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 126. [2023-11-06 22:19:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 122 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2023-11-06 22:19:59,802 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 3 [2023-11-06 22:19:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:59,802 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2023-11-06 22:19:59,803 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 22:19:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2023-11-06 22:19:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:19:59,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:59,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:19:59,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:19:59,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:19:59,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-06 22:19:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:59,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316065235] [2023-11-06 22:19:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:59,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:59,969 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 22:19:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:59,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316065235] [2023-11-06 22:19:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316065235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:59,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:59,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:59,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803989785] [2023-11-06 22:19:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:59,976 INFO L87 Difference]: Start difference. First operand 126 states and 132 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 22:20:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:00,116 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2023-11-06 22:20:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:00,117 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 22:20:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:00,123 INFO L225 Difference]: With dead ends: 126 [2023-11-06 22:20:00,124 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 22:20:00,128 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 22:20:00,131 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:00,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 193 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 22:20:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2023-11-06 22:20:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 120 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2023-11-06 22:20:00,175 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 3 [2023-11-06 22:20:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:00,176 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2023-11-06 22:20:00,176 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 22:20:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2023-11-06 22:20:00,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:20:00,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:00,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:20:00,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:20:00,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:00,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2023-11-06 22:20:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:00,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396209292] [2023-11-06 22:20:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,317 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 22:20:00,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396209292] [2023-11-06 22:20:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396209292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:00,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:00,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096475478] [2023-11-06 22:20:00,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:00,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:00,323 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:00,433 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2023-11-06 22:20:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:00,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:20:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:00,436 INFO L225 Difference]: With dead ends: 141 [2023-11-06 22:20:00,437 INFO L226 Difference]: Without dead ends: 141 [2023-11-06 22:20:00,437 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 22:20:00,447 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:00,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 177 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-06 22:20:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 127. [2023-11-06 22:20:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 123 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2023-11-06 22:20:00,464 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 6 [2023-11-06 22:20:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:00,469 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2023-11-06 22:20:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2023-11-06 22:20:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:20:00,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:00,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:20:00,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:20:00,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:00,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2023-11-06 22:20:00,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:00,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478526329] [2023-11-06 22:20:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,613 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 22:20:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478526329] [2023-11-06 22:20:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478526329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:00,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:00,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316181543] [2023-11-06 22:20:00,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:00,616 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:00,722 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2023-11-06 22:20:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:20:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:00,724 INFO L225 Difference]: With dead ends: 127 [2023-11-06 22:20:00,724 INFO L226 Difference]: Without dead ends: 127 [2023-11-06 22:20:00,725 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 22:20:00,732 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:00,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 194 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-06 22:20:00,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-11-06 22:20:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.8309859154929577) internal successors, (130), 121 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2023-11-06 22:20:00,745 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 6 [2023-11-06 22:20:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:00,746 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2023-11-06 22:20:00,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2023-11-06 22:20:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 22:20:00,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:00,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:00,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:20:00,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting appendErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:00,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1036552302, now seen corresponding path program 1 times [2023-11-06 22:20:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505557311] [2023-11-06 22:20:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,897 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 22:20:00,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:00,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505557311] [2023-11-06 22:20:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505557311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:00,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:00,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287861766] [2023-11-06 22:20:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:00,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:00,902 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:20:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:00,995 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2023-11-06 22:20:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2023-11-06 22:20:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:00,996 INFO L225 Difference]: With dead ends: 120 [2023-11-06 22:20:00,997 INFO L226 Difference]: Without dead ends: 120 [2023-11-06 22:20:00,997 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 22:20:00,998 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 43 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:00,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 142 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-06 22:20:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-06 22:20:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 116 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2023-11-06 22:20:01,014 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 12 [2023-11-06 22:20:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:01,014 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2023-11-06 22:20:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:20:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2023-11-06 22:20:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 22:20:01,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:01,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:01,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:20:01,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting appendErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:01,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1036552303, now seen corresponding path program 1 times [2023-11-06 22:20:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187049423] [2023-11-06 22:20:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:01,150 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 22:20:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187049423] [2023-11-06 22:20:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187049423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:01,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:01,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390093140] [2023-11-06 22:20:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:01,153 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:20:01,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:01,233 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2023-11-06 22:20:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:01,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2023-11-06 22:20:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:01,235 INFO L225 Difference]: With dead ends: 115 [2023-11-06 22:20:01,235 INFO L226 Difference]: Without dead ends: 115 [2023-11-06 22:20:01,235 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 22:20:01,236 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 38 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 151 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-06 22:20:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-06 22:20:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 111 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2023-11-06 22:20:01,244 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 12 [2023-11-06 22:20:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:01,244 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2023-11-06 22:20:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:20:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2023-11-06 22:20:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:20:01,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:01,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:20:01,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:01,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2068350391, now seen corresponding path program 1 times [2023-11-06 22:20:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274593430] [2023-11-06 22:20:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:01,501 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 22:20:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274593430] [2023-11-06 22:20:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274593430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:20:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383825931] [2023-11-06 22:20:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:01,505 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:01,844 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2023-11-06 22:20:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:01,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:20:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:01,846 INFO L225 Difference]: With dead ends: 226 [2023-11-06 22:20:01,846 INFO L226 Difference]: Without dead ends: 226 [2023-11-06 22:20:01,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:01,847 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 185 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:01,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 293 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:20:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-06 22:20:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 150. [2023-11-06 22:20:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.6126126126126126) internal successors, (179), 145 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2023-11-06 22:20:01,855 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 13 [2023-11-06 22:20:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:01,855 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2023-11-06 22:20:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2023-11-06 22:20:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:20:01,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:01,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:20:01,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:01,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2068350392, now seen corresponding path program 1 times [2023-11-06 22:20:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577292374] [2023-11-06 22:20:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:02,129 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 22:20:02,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:02,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577292374] [2023-11-06 22:20:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577292374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:02,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:02,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:20:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104527056] [2023-11-06 22:20:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:02,132 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:02,373 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2023-11-06 22:20:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:20:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:02,375 INFO L225 Difference]: With dead ends: 176 [2023-11-06 22:20:02,375 INFO L226 Difference]: Without dead ends: 176 [2023-11-06 22:20:02,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:02,376 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 30 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:02,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 326 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:20:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-06 22:20:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2023-11-06 22:20:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 133 states have (on average 1.5413533834586466) internal successors, (205), 168 states have internal predecessors, (205), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2023-11-06 22:20:02,382 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 13 [2023-11-06 22:20:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:02,383 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2023-11-06 22:20:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2023-11-06 22:20:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:20:02,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:02,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:20:02,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:02,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1480883050, now seen corresponding path program 1 times [2023-11-06 22:20:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578702783] [2023-11-06 22:20:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:03,163 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 22:20:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578702783] [2023-11-06 22:20:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578702783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:03,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:03,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:20:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502456993] [2023-11-06 22:20:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:20:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:20:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:20:03,167 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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 22:20:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:03,437 INFO L93 Difference]: Finished difference Result 176 states and 210 transitions. [2023-11-06 22:20:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:20:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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 22 [2023-11-06 22:20:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:03,439 INFO L225 Difference]: With dead ends: 176 [2023-11-06 22:20:03,439 INFO L226 Difference]: Without dead ends: 176 [2023-11-06 22:20:03,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:20:03,440 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 22 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:03,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 547 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:20:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-06 22:20:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2023-11-06 22:20:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 168 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 210 transitions. [2023-11-06 22:20:03,452 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 210 transitions. Word has length 22 [2023-11-06 22:20:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:03,452 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 210 transitions. [2023-11-06 22:20:03,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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 22:20:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 210 transitions. [2023-11-06 22:20:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:20:03,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:03,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:20:03,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:03,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash -439263795, now seen corresponding path program 1 times [2023-11-06 22:20:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152333220] [2023-11-06 22:20:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,257 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 22:20:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152333220] [2023-11-06 22:20:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152333220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:04,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:20:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976228182] [2023-11-06 22:20:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:04,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:20:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:20:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:04,260 INFO L87 Difference]: Start difference. First operand 174 states and 210 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 22:20:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:04,537 INFO L93 Difference]: Finished difference Result 166 states and 199 transitions. [2023-11-06 22:20:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:20:04,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 24 [2023-11-06 22:20:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:04,540 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:20:04,540 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:20:04,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:04,541 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 10 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:04,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 536 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:20:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:20:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-06 22:20:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 125 states have (on average 1.544) internal successors, (193), 160 states have internal predecessors, (193), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2023-11-06 22:20:04,548 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 24 [2023-11-06 22:20:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2023-11-06 22:20:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 22:20:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2023-11-06 22:20:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:20:04,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:04,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:20:04,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:04,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1779831779, now seen corresponding path program 1 times [2023-11-06 22:20:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741970586] [2023-11-06 22:20:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:04,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,664 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 22:20:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741970586] [2023-11-06 22:20:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741970586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:04,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762424155] [2023-11-06 22:20:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:04,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:04,667 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:20:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:04,787 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2023-11-06 22:20:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-06 22:20:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:04,789 INFO L225 Difference]: With dead ends: 157 [2023-11-06 22:20:04,790 INFO L226 Difference]: Without dead ends: 157 [2023-11-06 22:20:04,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:04,791 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 12 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:04,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 251 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-06 22:20:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 144. [2023-11-06 22:20:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 138 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2023-11-06 22:20:04,797 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 31 [2023-11-06 22:20:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:04,797 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2023-11-06 22:20:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:20:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2023-11-06 22:20:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:20:04,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:04,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:20:04,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:04,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -610198618, now seen corresponding path program 1 times [2023-11-06 22:20:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815134155] [2023-11-06 22:20:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:05,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815134155] [2023-11-06 22:20:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815134155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4519497] [2023-11-06 22:20:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:05,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:05,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:05,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:05,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:20:05,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:05,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:20:05,978 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:20:05,979 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 22:20:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:05,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:06,396 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 47 treesize of output 43 [2023-11-06 22:20:06,417 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:06,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-11-06 22:20:06,627 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:06,627 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 25 treesize of output 29 [2023-11-06 22:20:06,761 INFO L322 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2023-11-06 22:20:06,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 37 [2023-11-06 22:20:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4519497] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:06,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-11-06 22:20:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218716543] [2023-11-06 22:20:06,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:20:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:20:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:20:06,806 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:20:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:07,768 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2023-11-06 22:20:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:20:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-06 22:20:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:07,770 INFO L225 Difference]: With dead ends: 181 [2023-11-06 22:20:07,771 INFO L226 Difference]: Without dead ends: 181 [2023-11-06 22:20:07,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:20:07,772 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 418 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:07,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 589 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:20:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-06 22:20:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 142. [2023-11-06 22:20:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 136 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2023-11-06 22:20:07,779 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 32 [2023-11-06 22:20:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:07,779 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2023-11-06 22:20:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:20:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2023-11-06 22:20:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:20:07,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:07,781 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:07,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:20:07,989 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:07,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1027331565, now seen corresponding path program 1 times [2023-11-06 22:20:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794029142] [2023-11-06 22:20:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:08,468 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 22:20:08,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:08,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794029142] [2023-11-06 22:20:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794029142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828553369] [2023-11-06 22:20:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:08,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:08,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:08,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:08,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:20:08,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:08,672 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 22:20:08,698 WARN L861 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1))) is different from true [2023-11-06 22:20:08,739 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:20:08,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:20:08,770 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:20:08,771 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:20:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:20:08,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:08,975 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 22:20:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828553369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:08,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 11 [2023-11-06 22:20:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735155824] [2023-11-06 22:20:08,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:20:08,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:20:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:20:08,980 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:20:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:09,459 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2023-11-06 22:20:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:20:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-06 22:20:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:09,462 INFO L225 Difference]: With dead ends: 180 [2023-11-06 22:20:09,462 INFO L226 Difference]: Without dead ends: 180 [2023-11-06 22:20:09,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=196, Unknown=1, NotChecked=30, Total=306 [2023-11-06 22:20:09,463 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 178 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:09,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 394 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 148 Unchecked, 0.4s Time] [2023-11-06 22:20:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-06 22:20:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 143. [2023-11-06 22:20:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 137 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:20:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2023-11-06 22:20:09,469 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 33 [2023-11-06 22:20:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:09,470 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2023-11-06 22:20:09,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:20:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2023-11-06 22:20:09,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:20:09,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:09,472 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:09,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:09,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:09,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1027331566, now seen corresponding path program 1 times [2023-11-06 22:20:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152848991] [2023-11-06 22:20:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:10,389 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 22:20:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152848991] [2023-11-06 22:20:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152848991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208100965] [2023-11-06 22:20:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:10,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:10,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:10,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:20:10,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:10,576 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 22:20:10,582 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 22:20:10,651 WARN L861 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (and (= (store |c_old(#length)| append_~node~0.base (select |c_#length| append_~node~0.base)) |c_#length|) (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1)))) is different from true [2023-11-06 22:20:10,764 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:20:10,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:20:10,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:20:10,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:10,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:20:10,958 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:20:10,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:20:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:20:10,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208100965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:11,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:11,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-11-06 22:20:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283843783] [2023-11-06 22:20:11,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:20:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:20:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=256, Unknown=1, NotChecked=32, Total=342 [2023-11-06 22:20:11,330 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:12,497 INFO L93 Difference]: Finished difference Result 328 states and 357 transitions. [2023-11-06 22:20:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:20:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-06 22:20:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:12,500 INFO L225 Difference]: With dead ends: 328 [2023-11-06 22:20:12,500 INFO L226 Difference]: Without dead ends: 328 [2023-11-06 22:20:12,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=532, Unknown=1, NotChecked=48, Total=702 [2023-11-06 22:20:12,502 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 328 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:12,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 665 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 870 Invalid, 0 Unknown, 266 Unchecked, 0.9s Time] [2023-11-06 22:20:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-06 22:20:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 237. [2023-11-06 22:20:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 193 states have (on average 1.38860103626943) internal successors, (268), 226 states have internal predecessors, (268), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:20:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2023-11-06 22:20:12,512 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 33 [2023-11-06 22:20:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:12,512 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2023-11-06 22:20:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2023-11-06 22:20:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:20:12,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:12,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:12,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:12,720 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:12,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1240813252, now seen corresponding path program 1 times [2023-11-06 22:20:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700502154] [2023-11-06 22:20:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700502154] [2023-11-06 22:20:15,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700502154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:15,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44553609] [2023-11-06 22:20:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:15,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:15,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:15,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-06 22:20:15,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:15,405 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 22:20:15,458 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:20:15,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:20:15,737 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 13 treesize of output 9 [2023-11-06 22:20:15,746 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 13 treesize of output 9 [2023-11-06 22:20:15,820 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:15,820 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 18 treesize of output 17 [2023-11-06 22:20:15,827 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 7 treesize of output 3 [2023-11-06 22:20:15,851 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:15,851 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 18 treesize of output 17 [2023-11-06 22:20:15,858 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 7 treesize of output 3 [2023-11-06 22:20:15,965 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:15,965 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 22 treesize of output 21 [2023-11-06 22:20:15,989 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:15,989 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 22 treesize of output 21 [2023-11-06 22:20:16,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:16,172 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:20:16,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 28 [2023-11-06 22:20:16,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:16,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-11-06 22:20:16,443 INFO L322 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2023-11-06 22:20:16,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:20:16,548 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 48 treesize of output 39 [2023-11-06 22:20:16,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-11-06 22:20:16,800 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 48 treesize of output 39 [2023-11-06 22:20:16,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-11-06 22:20:16,865 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 48 treesize of output 39 [2023-11-06 22:20:16,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-11-06 22:20:16,988 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:16,989 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 39 treesize of output 21 [2023-11-06 22:20:16,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:16,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2023-11-06 22:20:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:17,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:17,159 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_append_~head.offset 4))) (and (forall ((v_ArrVal_1084 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| c_append_~node~0.base v_ArrVal_1084) c_append_~head.base) .cse0) 5))) (forall ((v_ArrVal_1085 (Array Int Int)) (v_ArrVal_1084 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| c_append_~node~0.base v_ArrVal_1084) c_append_~head.base) .cse0) 9) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_append_~node~0.base v_ArrVal_1085) c_append_~head.base) .cse0)))))) is different from false [2023-11-06 22:20:18,115 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,116 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 114 treesize of output 115 [2023-11-06 22:20:18,138 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,138 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 134 treesize of output 125 [2023-11-06 22:20:18,160 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,161 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 492 treesize of output 356 [2023-11-06 22:20:18,216 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 552 treesize of output 534 [2023-11-06 22:20:18,300 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 279 treesize of output 329 [2023-11-06 22:20:18,339 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:18,340 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 251 treesize of output 248 [2023-11-06 22:20:18,375 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 280 treesize of output 260 [2023-11-06 22:20:18,404 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 268 treesize of output 240 [2023-11-06 22:20:18,433 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 215 treesize of output 199 [2023-11-06 22:20:18,467 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 199 treesize of output 191 [2023-11-06 22:20:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44553609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:21,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-11-06 22:20:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673803488] [2023-11-06 22:20:21,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:20:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:20:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1086, Unknown=2, NotChecked=66, Total=1260 [2023-11-06 22:20:21,113 INFO L87 Difference]: Start difference. First operand 237 states and 282 transitions. Second operand has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 25 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:24,027 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2023-11-06 22:20:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:20:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 25 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-06 22:20:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:24,037 INFO L225 Difference]: With dead ends: 286 [2023-11-06 22:20:24,037 INFO L226 Difference]: Without dead ends: 286 [2023-11-06 22:20:24,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=246, Invalid=1736, Unknown=2, NotChecked=86, Total=2070 [2023-11-06 22:20:24,040 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 287 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:24,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1103 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:20:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-06 22:20:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 236. [2023-11-06 22:20:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 193 states have (on average 1.3730569948186528) internal successors, (265), 225 states have internal predecessors, (265), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:20:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 279 transitions. [2023-11-06 22:20:24,052 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 279 transitions. Word has length 41 [2023-11-06 22:20:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:24,053 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 279 transitions. [2023-11-06 22:20:24,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 25 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 279 transitions. [2023-11-06 22:20:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:20:24,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:24,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:24,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:24,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1240813253, now seen corresponding path program 1 times [2023-11-06 22:20:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126732898] [2023-11-06 22:20:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126732898] [2023-11-06 22:20:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126732898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452318763] [2023-11-06 22:20:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:25,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:25,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:25,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:25,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:20:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:26,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 22:20:26,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:26,028 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 22:20:26,080 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:20:26,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:20:26,359 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 13 treesize of output 9 [2023-11-06 22:20:26,428 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:26,428 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 18 treesize of output 17 [2023-11-06 22:20:26,437 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 7 treesize of output 3 [2023-11-06 22:20:26,509 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:20:26,510 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 22 treesize of output 21 [2023-11-06 22:20:26,609 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:26,621 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:20:26,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 28 [2023-11-06 22:20:26,869 INFO L322 Elim1Store]: treesize reduction 58, result has 34.8 percent of original size [2023-11-06 22:20:26,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 40 [2023-11-06 22:20:26,962 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 40 treesize of output 31 [2023-11-06 22:20:27,211 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 40 treesize of output 31 [2023-11-06 22:20:27,268 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 40 treesize of output 31 [2023-11-06 22:20:27,352 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:27,353 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 31 treesize of output 13 [2023-11-06 22:20:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:27,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:27,449 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1302 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_append_~node~0.base v_ArrVal_1302) c_append_~head.base) (+ c_append_~head.offset 4))) 1)) is different from false [2023-11-06 22:20:27,891 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:27,892 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 33 treesize of output 34 [2023-11-06 22:20:27,907 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:27,907 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 118 [2023-11-06 22:20:27,919 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 86 treesize of output 78 [2023-11-06 22:20:27,928 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 40 treesize of output 36 [2023-11-06 22:20:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452318763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:28,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-06 22:20:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611467336] [2023-11-06 22:20:28,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:28,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:20:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:20:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=949, Unknown=1, NotChecked=62, Total=1122 [2023-11-06 22:20:28,269 INFO L87 Difference]: Start difference. First operand 236 states and 279 transitions. Second operand has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 24 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:30,256 INFO L93 Difference]: Finished difference Result 285 states and 342 transitions. [2023-11-06 22:20:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:20:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 24 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-06 22:20:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:30,260 INFO L225 Difference]: With dead ends: 285 [2023-11-06 22:20:30,260 INFO L226 Difference]: Without dead ends: 285 [2023-11-06 22:20:30,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=262, Invalid=1547, Unknown=1, NotChecked=82, Total=1892 [2023-11-06 22:20:30,262 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 171 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:30,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1105 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:20:30,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-06 22:20:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 236. [2023-11-06 22:20:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 225 states have internal predecessors, (264), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:20:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 278 transitions. [2023-11-06 22:20:30,276 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 278 transitions. Word has length 41 [2023-11-06 22:20:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:30,278 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 278 transitions. [2023-11-06 22:20:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 24 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:20:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 278 transitions. [2023-11-06 22:20:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:20:30,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:30,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:30,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:30,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:30,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 22:20:30,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1836513292, now seen corresponding path program 1 times [2023-11-06 22:20:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:30,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450315824] [2023-11-06 22:20:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450315824] [2023-11-06 22:20:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450315824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891809521] [2023-11-06 22:20:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:34,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:34,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:34,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:34,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22569d2-660a-4877-a432-975f5459bd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:20:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-06 22:20:34,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:34,298 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 22:20:34,333 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:20:34,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:20:34,392 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 11 treesize of output 7 [2023-11-06 22:20:34,400 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 11 treesize of output 7 [2023-11-06 22:20:34,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:20:34,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:20:35,388 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| |c_append_#in~head.base| (select |c_#memory_$Pointer$.base| |c_append_#in~head.base|))) (.cse0 (store |c_old(#memory_$Pointer$.offset)| |c_append_#in~head.base| (select |c_#memory_$Pointer$.offset| |c_append_#in~head.base|)))) (or (exists ((append_~node~0.base Int)) (and (= |c_#memory_$Pointer$.offset| (store .cse0 append_~node~0.base (select |c_#memory_$Pointer$.offset| append_~node~0.base))) (not (= append_~node~0.base |c_append_#in~head.base|)) (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1)) (= (store |c_old(#memory_$Pointer$.base)| append_~node~0.base (select |c_#memory_$Pointer$.base| append_~node~0.base)) |c_#memory_$Pointer$.base|))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (append_~node~0.base Int)) (and (= |c_#memory_$Pointer$.offset| (store .cse0 append_~node~0.base (select |c_#memory_$Pointer$.offset| append_~node~0.base))) (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1)) (= (store |c_old(#memory_$Pointer$.base)| append_~node~0.base (select |c_#memory_$Pointer$.base| append_~node~0.base)) |c_#memory_$Pointer$.base|) (= (select (store (store |c_old(#memory_$Pointer$.offset)| append_~node~0.base v_DerPreprocessor_5) |c_append_#in~head.base| v_DerPreprocessor_6) append_~node~0.base) v_DerPreprocessor_5) (= v_DerPreprocessor_3 (select (store (store |c_old(#memory_$Pointer$.base)| append_~node~0.base v_DerPreprocessor_3) |c_append_#in~head.base| v_DerPreprocessor_4) append_~node~0.base)))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (append_~node~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store .cse1 append_~node~0.base (select |c_#memory_$Pointer$.base| append_~node~0.base))) (= |c_#memory_$Pointer$.offset| (store .cse0 append_~node~0.base (select |c_#memory_$Pointer$.offset| append_~node~0.base))) (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1)) (= (select (store (store |c_old(#memory_$Pointer$.offset)| append_~node~0.base v_DerPreprocessor_5) |c_append_#in~head.base| v_DerPreprocessor_6) append_~node~0.base) v_DerPreprocessor_5) (= v_DerPreprocessor_3 (select (store (store |c_old(#memory_$Pointer$.base)| append_~node~0.base v_DerPreprocessor_3) |c_append_#in~head.base| v_DerPreprocessor_4) append_~node~0.base)))) (exists ((append_~node~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store .cse1 append_~node~0.base (select |c_#memory_$Pointer$.base| append_~node~0.base))) (= |c_#memory_$Pointer$.offset| (store .cse0 append_~node~0.base (select |c_#memory_$Pointer$.offset| append_~node~0.base))) (not (= append_~node~0.base |c_append_#in~head.base|)) (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1)))))) is different from true [2023-11-06 22:20:35,685 INFO L322 Elim1Store]: treesize reduction 143, result has 19.2 percent of original size [2023-11-06 22:20:35,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 212 treesize of output 337 [2023-11-06 22:20:35,857 INFO L322 Elim1Store]: treesize reduction 111, result has 15.3 percent of original size [2023-11-06 22:20:35,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 282 [2023-11-06 22:20:36,497 INFO L322 Elim1Store]: treesize reduction 388, result has 21.3 percent of original size [2023-11-06 22:20:36,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 34 case distinctions, treesize of input 124 treesize of output 302 [2023-11-06 22:20:43,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,087 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,126 INFO L322 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2023-11-06 22:20:43,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:43,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:43,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:43,785 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,794 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,814 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,818 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:43,862 INFO L322 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2023-11-06 22:20:43,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,112 INFO L217 Elim1Store]: Index analysis took 111 ms [2023-11-06 22:20:44,141 INFO L322 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2023-11-06 22:20:44,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:44,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,448 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,502 INFO L217 Elim1Store]: Index analysis took 148 ms [2023-11-06 22:20:44,538 INFO L322 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-06 22:20:44,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:44,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,920 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:44,947 INFO L217 Elim1Store]: Index analysis took 135 ms [2023-11-06 22:20:44,980 INFO L322 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-11-06 22:20:44,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:45,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,272 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,365 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,390 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,401 INFO L217 Elim1Store]: Index analysis took 182 ms [2023-11-06 22:20:45,404 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,436 INFO L322 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-11-06 22:20:45,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:45,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,760 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,764 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:45,812 INFO L322 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-11-06 22:20:45,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 80 [2023-11-06 22:20:49,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:49,148 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:49,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:49,173 INFO L322 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-06 22:20:49,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:49,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:49,314 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:49,325 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:49,349 INFO L322 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-06 22:20:49,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:50,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,067 INFO L322 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2023-11-06 22:20:50,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:50,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,210 INFO L322 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-06 22:20:50,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,477 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,483 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,498 INFO L322 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-06 22:20:50,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,679 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,701 INFO L322 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-06 22:20:50,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:50,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:50,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,900 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,901 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:50,909 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-06 22:20:50,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 34 [2023-11-06 22:20:59,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,035 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 22:20:59,035 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 3 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:20:59,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:20:59,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:20:59,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,637 INFO L322 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-06 22:20:59,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:20:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:59,987 INFO L322 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-06 22:20:59,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:21:02,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:02,613 INFO L322 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-06 22:21:02,613 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 3 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:22:06,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:09,258 INFO L322 Elim1Store]: treesize reduction 392, result has 9.9 percent of original size [2023-11-06 22:22:09,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 3671 treesize of output 3729 [2023-11-06 22:22:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,903 INFO L322 Elim1Store]: treesize reduction 180, result has 33.1 percent of original size [2023-11-06 22:22:24,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 142 treesize of output 274 [2023-11-06 22:22:25,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:25,720 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,721 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,759 INFO L322 Elim1Store]: treesize reduction 73, result has 11.0 percent of original size [2023-11-06 22:22:25,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 42 [2023-11-06 22:22:25,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,798 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,802 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:22:25,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:25,868 INFO L322 Elim1Store]: treesize reduction 52, result has 13.3 percent of original size [2023-11-06 22:22:25,868 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 20 [2023-11-06 22:22:26,026 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:26,038 INFO L322 Elim1Store]: treesize reduction 44, result has 8.3 percent of original size [2023-11-06 22:22:26,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 37 [2023-11-06 22:22:26,721 INFO L322 Elim1Store]: treesize reduction 282, result has 19.9 percent of original size [2023-11-06 22:22:26,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 963 treesize of output 1203 [2023-11-06 22:22:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:28,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:28,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:28,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:28,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:28,847 INFO L322 Elim1Store]: treesize reduction 106, result has 4.5 percent of original size [2023-11-06 22:22:28,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 95 [2023-11-06 22:22:30,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:32,588 INFO L322 Elim1Store]: treesize reduction 724, result has 21.3 percent of original size [2023-11-06 22:22:32,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 425 treesize of output 741 [2023-11-06 22:23:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:08,266 INFO L322 Elim1Store]: treesize reduction 243, result has 1.6 percent of original size [2023-11-06 22:23:08,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 591 treesize of output 508 [2023-11-06 22:23:08,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,486 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:08,500 INFO L322 Elim1Store]: treesize reduction 100, result has 1.0 percent of original size [2023-11-06 22:23:08,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1292 treesize of output 1223 [2023-11-06 22:23:08,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:09,435 INFO L322 Elim1Store]: treesize reduction 221, result has 24.3 percent of original size [2023-11-06 22:23:09,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 198 treesize of output 364 [2023-11-06 22:23:10,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:10,562 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:10,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:10,564 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:10,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:10,595 INFO L322 Elim1Store]: treesize reduction 151, result has 0.7 percent of original size [2023-11-06 22:23:10,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 79 treesize of output 86 [2023-11-06 22:23:12,172 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:12,190 INFO L322 Elim1Store]: treesize reduction 54, result has 12.9 percent of original size [2023-11-06 22:23:12,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 35 [2023-11-06 22:23:16,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:16,537 INFO L322 Elim1Store]: treesize reduction 224, result has 32.9 percent of original size [2023-11-06 22:23:16,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 91 treesize of output 237 [2023-11-06 22:23:18,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:18,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-06 22:23:18,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:23:18,176 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:23:18,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:18,246 INFO L322 Elim1Store]: treesize reduction 72, result has 22.6 percent of original size [2023-11-06 22:23:18,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 99 [2023-11-06 22:23:18,618 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:18,634 INFO L322 Elim1Store]: treesize reduction 34, result has 19.0 percent of original size [2023-11-06 22:23:18,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 20 [2023-11-06 22:23:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:19,950 INFO L322 Elim1Store]: treesize reduction 397, result has 25.4 percent of original size [2023-11-06 22:23:19,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 271 treesize of output 498 [2023-11-06 22:23:24,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:24,143 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,186 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,187 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,199 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,258 INFO L322 Elim1Store]: treesize reduction 95, result has 7.8 percent of original size [2023-11-06 22:23:24,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 72 treesize of output 95 [2023-11-06 22:23:24,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:24,420 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,498 INFO L322 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-06 22:23:24,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 90 [2023-11-06 22:23:24,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,632 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,633 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,641 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,642 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,643 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,643 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,649 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,684 INFO L322 Elim1Store]: treesize reduction 76, result has 6.2 percent of original size [2023-11-06 22:23:24,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 92 [2023-11-06 22:23:24,762 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,765 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,785 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:24,849 INFO L322 Elim1Store]: treesize reduction 98, result has 4.9 percent of original size [2023-11-06 22:23:24,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 70 treesize of output 90 [2023-11-06 22:23:24,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,102 INFO L217 Elim1Store]: Index analysis took 117 ms [2023-11-06 22:23:25,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,209 INFO L322 Elim1Store]: treesize reduction 77, result has 9.4 percent of original size [2023-11-06 22:23:25,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 72 treesize of output 95 [2023-11-06 22:23:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,327 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,336 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,337 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,384 INFO L322 Elim1Store]: treesize reduction 74, result has 9.8 percent of original size [2023-11-06 22:23:25,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 93 [2023-11-06 22:23:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,523 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,543 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,544 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,551 INFO L322 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-11-06 22:23:25,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 78 [2023-11-06 22:23:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,742 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,751 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,760 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,762 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,768 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:23:25,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 78 [2023-11-06 22:23:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:25,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,939 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,945 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,952 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,959 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:25,983 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:23:25,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 90 [2023-11-06 22:23:26,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,082 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,089 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,089 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,135 INFO L322 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2023-11-06 22:23:26,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 93 [2023-11-06 22:23:26,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,247 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2023-11-06 22:23:26,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,397 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,404 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,411 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2023-11-06 22:23:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:26,535 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,544 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,549 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:26,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 86 [2023-11-06 22:23:27,685 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:27,691 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-06 22:23:27,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 29 treesize of output 9 [2023-11-06 22:23:27,726 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:27,733 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-06 22:23:27,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 9 [2023-11-06 22:23:27,796 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:27,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-06 22:23:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:27,942 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:27,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-06 22:23:28,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:28,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:28,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:28,173 INFO L322 Elim1Store]: treesize reduction 83, result has 5.7 percent of original size [2023-11-06 22:23:28,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 45 [2023-11-06 22:23:28,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:28,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:28,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:28,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:28,477 INFO L322 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-06 22:23:28,477 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 40 [2023-11-06 22:23:30,287 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:30,304 INFO L322 Elim1Store]: treesize reduction 34, result has 19.0 percent of original size [2023-11-06 22:23:30,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 20 [2023-11-06 22:23:30,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:23:30,695 INFO L322 Elim1Store]: treesize reduction 224, result has 32.9 percent of original size [2023-11-06 22:23:30,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 75 treesize of output 221