./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:16:48,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:48,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:16:48,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:48,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:48,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:48,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:48,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:48,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:48,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:48,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:48,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:48,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:48,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:48,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:16:48,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:48,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:16:48,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:48,532 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:16:48,533 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:16:48,533 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:16:48,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:48,534 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:16:48,535 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:16:48,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:16:48,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:48,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:48,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:48,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:16:48,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:48,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:48,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:48,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:48,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:48,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:48,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:48,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:48,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:48,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:48,541 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_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c [2023-11-21 22:16:48,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:48,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:48,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:48,870 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:48,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:48,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/memsafety-ext/tree_stack.i [2023-11-21 22:16:52,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:52,484 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:52,484 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/sv-benchmarks/c/memsafety-ext/tree_stack.i [2023-11-21 22:16:52,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/data/a17ac0e06/f33026ff8d974ecfb463c508e7ee5fc2/FLAGdb8de7440 [2023-11-21 22:16:52,517 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/data/a17ac0e06/f33026ff8d974ecfb463c508e7ee5fc2 [2023-11-21 22:16:52,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:52,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:52,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:52,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:52,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:52,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:52,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f56ec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:52, skipping insertion in model container [2023-11-21 22:16:52,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:52" (1/1) ... [2023-11-21 22:16:52,583 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:52,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:52,940 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:52,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:53,032 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:53,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53 WrapperNode [2023-11-21 22:16:53,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:53,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:53,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:53,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:53,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,104 INFO L138 Inliner]: procedures = 123, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 145 [2023-11-21 22:16:53,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:53,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:53,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:53,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:53,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:53,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:53,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:53,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:53,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (1/1) ... [2023-11-21 22:16:53,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:53,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:53,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:16:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:16:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:16:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:16:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:16:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:53,356 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:53,358 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:53,889 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:53,996 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:53,997 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:16:53,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:53 BoogieIcfgContainer [2023-11-21 22:16:53,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:54,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:54,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:54,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:54,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:52" (1/3) ... [2023-11-21 22:16:54,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d9f890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:54, skipping insertion in model container [2023-11-21 22:16:54,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:53" (2/3) ... [2023-11-21 22:16:54,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d9f890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:54, skipping insertion in model container [2023-11-21 22:16:54,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:53" (3/3) ... [2023-11-21 22:16:54,013 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_stack.i [2023-11-21 22:16:54,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:54,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2023-11-21 22:16:54,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:54,110 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;@64ef8bd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:54,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-11-21 22:16:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 116 states have internal predecessors, (127), 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) [2023-11-21 22:16:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:16:54,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:54,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:16:54,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:54,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 7940, now seen corresponding path program 1 times [2023-11-21 22:16:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434981581] [2023-11-21 22:16:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:54,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434981581] [2023-11-21 22:16:54,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434981581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:16:54,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796448862] [2023-11-21 22:16:54,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:54,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:54,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:54,451 INFO L87 Difference]: Start difference. First operand has 117 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:16:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:54,683 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2023-11-21 22:16:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:54,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 22:16:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:54,699 INFO L225 Difference]: With dead ends: 130 [2023-11-21 22:16:54,699 INFO L226 Difference]: Without dead ends: 129 [2023-11-21 22:16:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:54,706 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 83 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:54,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 88 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-21 22:16:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2023-11-21 22:16:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 49 states have (on average 2.489795918367347) internal successors, (122), 113 states have internal predecessors, (122), 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) [2023-11-21 22:16:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2023-11-21 22:16:54,764 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 2 [2023-11-21 22:16:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:54,765 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2023-11-21 22:16:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:16:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2023-11-21 22:16:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:16:54,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:54,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:16:54,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:54,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 7941, now seen corresponding path program 1 times [2023-11-21 22:16:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663330371] [2023-11-21 22:16:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663330371] [2023-11-21 22:16:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663330371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:54,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:16:54,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776129825] [2023-11-21 22:16:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:54,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:54,923 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:16:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:55,043 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2023-11-21 22:16:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 22:16:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:55,045 INFO L225 Difference]: With dead ends: 112 [2023-11-21 22:16:55,045 INFO L226 Difference]: Without dead ends: 112 [2023-11-21 22:16:55,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:55,047 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:55,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 54 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-21 22:16:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-21 22:16:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 111 states have internal predecessors, (120), 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) [2023-11-21 22:16:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2023-11-21 22:16:55,057 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 2 [2023-11-21 22:16:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:55,057 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2023-11-21 22:16:55,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:16:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2023-11-21 22:16:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:16:55,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:55,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:16:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:16:55,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:55,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1257909552, now seen corresponding path program 1 times [2023-11-21 22:16:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:55,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369908393] [2023-11-21 22:16:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:55,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369908393] [2023-11-21 22:16:55,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369908393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:55,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:55,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:55,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502901547] [2023-11-21 22:16:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:55,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:55,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:55,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:55,137 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:55,357 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2023-11-21 22:16:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:16:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:55,358 INFO L225 Difference]: With dead ends: 117 [2023-11-21 22:16:55,359 INFO L226 Difference]: Without dead ends: 117 [2023-11-21 22:16:55,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:55,361 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 137 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:55,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 63 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-21 22:16:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2023-11-21 22:16:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 50 states have (on average 2.14) internal successors, (107), 97 states have internal predecessors, (107), 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) [2023-11-21 22:16:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-11-21 22:16:55,370 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 6 [2023-11-21 22:16:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:55,370 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-11-21 22:16:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-11-21 22:16:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:16:55,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:55,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:16:55,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:55,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:55,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1257909551, now seen corresponding path program 1 times [2023-11-21 22:16:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220290888] [2023-11-21 22:16:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:55,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:55,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220290888] [2023-11-21 22:16:55,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220290888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:55,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:55,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:55,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862939059] [2023-11-21 22:16:55,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:55,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:55,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:55,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:55,540 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-11-21 22:16:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:55,781 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2023-11-21 22:16:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2023-11-21 22:16:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:55,784 INFO L225 Difference]: With dead ends: 129 [2023-11-21 22:16:55,784 INFO L226 Difference]: Without dead ends: 129 [2023-11-21 22:16:55,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:55,786 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 160 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 73 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-21 22:16:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2023-11-21 22:16:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 116 states have internal predecessors, (136), 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) [2023-11-21 22:16:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2023-11-21 22:16:55,805 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 6 [2023-11-21 22:16:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:55,805 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2023-11-21 22:16:55,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2023-11-21 22:16:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2023-11-21 22:16:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:16:55,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:55,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:55,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:16:55,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:55,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -340488952, now seen corresponding path program 1 times [2023-11-21 22:16:55,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:55,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845829870] [2023-11-21 22:16:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:55,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:55,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845829870] [2023-11-21 22:16:55,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845829870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:55,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112804778] [2023-11-21 22:16:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:55,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:55,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:55,869 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:55,987 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2023-11-21 22:16:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 22:16:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:55,989 INFO L225 Difference]: With dead ends: 136 [2023-11-21 22:16:55,990 INFO L226 Difference]: Without dead ends: 136 [2023-11-21 22:16:55,990 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 [2023-11-21 22:16:55,991 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 22 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:55,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 133 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-21 22:16:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2023-11-21 22:16:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.943661971830986) internal successors, (138), 116 states have internal predecessors, (138), 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) [2023-11-21 22:16:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2023-11-21 22:16:55,999 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 7 [2023-11-21 22:16:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:55,999 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2023-11-21 22:16:56,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2023-11-21 22:16:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:16:56,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:56,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:56,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:16:56,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:56,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash -340488951, now seen corresponding path program 1 times [2023-11-21 22:16:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728266747] [2023-11-21 22:16:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728266747] [2023-11-21 22:16:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728266747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149487354] [2023-11-21 22:16:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:56,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:56,081 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:56,196 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-11-21 22:16:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:56,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 22:16:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:56,198 INFO L225 Difference]: With dead ends: 117 [2023-11-21 22:16:56,198 INFO L226 Difference]: Without dead ends: 117 [2023-11-21 22:16:56,198 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 [2023-11-21 22:16:56,199 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:56,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-21 22:16:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-11-21 22:16:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.9014084507042253) internal successors, (135), 114 states have internal predecessors, (135), 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) [2023-11-21 22:16:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2023-11-21 22:16:56,206 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 7 [2023-11-21 22:16:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:56,206 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2023-11-21 22:16:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2023-11-21 22:16:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:16:56,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:56,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:56,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:16:56,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:56,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1206490535, now seen corresponding path program 1 times [2023-11-21 22:16:56,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:56,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65814926] [2023-11-21 22:16:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65814926] [2023-11-21 22:16:56,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65814926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060610062] [2023-11-21 22:16:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:56,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:56,285 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-21 22:16:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:56,342 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2023-11-21 22:16:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-11-21 22:16:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:56,344 INFO L225 Difference]: With dead ends: 115 [2023-11-21 22:16:56,344 INFO L226 Difference]: Without dead ends: 115 [2023-11-21 22:16:56,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:56,349 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:56,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 155 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-21 22:16:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-21 22:16:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 114 states have internal predecessors, (134), 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) [2023-11-21 22:16:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2023-11-21 22:16:56,358 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 10 [2023-11-21 22:16:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:56,358 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2023-11-21 22:16:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-21 22:16:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2023-11-21 22:16:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:16:56,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:56,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:16:56,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1253582969, now seen corresponding path program 1 times [2023-11-21 22:16:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620651696] [2023-11-21 22:16:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620651696] [2023-11-21 22:16:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620651696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:16:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724347484] [2023-11-21 22:16:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:56,493 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-21 22:16:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:56,676 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2023-11-21 22:16:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2023-11-21 22:16:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:56,678 INFO L225 Difference]: With dead ends: 126 [2023-11-21 22:16:56,678 INFO L226 Difference]: Without dead ends: 126 [2023-11-21 22:16:56,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:56,680 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 40 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:56,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 145 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-21 22:16:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2023-11-21 22:16:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.8194444444444444) internal successors, (131), 110 states have internal predecessors, (131), 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) [2023-11-21 22:16:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2023-11-21 22:16:56,689 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 11 [2023-11-21 22:16:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:56,689 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2023-11-21 22:16:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-21 22:16:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2023-11-21 22:16:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:16:56,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:56,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:16:56,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:56,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1253582968, now seen corresponding path program 1 times [2023-11-21 22:16:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:56,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518825104] [2023-11-21 22:16:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:56,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518825104] [2023-11-21 22:16:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518825104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993724644] [2023-11-21 22:16:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:56,839 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:16:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:57,029 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-11-21 22:16:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-21 22:16:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:57,030 INFO L225 Difference]: With dead ends: 145 [2023-11-21 22:16:57,031 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 22:16:57,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:57,032 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 44 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:57,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 116 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 22:16:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 116. [2023-11-21 22:16:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 115 states have internal predecessors, (142), 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) [2023-11-21 22:16:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-11-21 22:16:57,036 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 11 [2023-11-21 22:16:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:57,036 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-11-21 22:16:57,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-21 22:16:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-11-21 22:16:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:16:57,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:57,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:16:57,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:57,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1345697709, now seen corresponding path program 1 times [2023-11-21 22:16:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256926478] [2023-11-21 22:16:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256926478] [2023-11-21 22:16:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256926478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:57,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538784624] [2023-11-21 22:16:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:57,192 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-21 22:16:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:57,373 INFO L93 Difference]: Finished difference Result 146 states and 177 transitions. [2023-11-21 22:16:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:16:57,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2023-11-21 22:16:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:57,374 INFO L225 Difference]: With dead ends: 146 [2023-11-21 22:16:57,375 INFO L226 Difference]: Without dead ends: 146 [2023-11-21 22:16:57,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:16:57,376 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 31 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:57,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 231 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-21 22:16:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 127. [2023-11-21 22:16:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 126 states have internal predecessors, (156), 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) [2023-11-21 22:16:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2023-11-21 22:16:57,380 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 11 [2023-11-21 22:16:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:57,380 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2023-11-21 22:16:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-21 22:16:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2023-11-21 22:16:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:16:57,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:57,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:57,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:16:57,382 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:57,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2102311371, now seen corresponding path program 1 times [2023-11-21 22:16:57,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819427571] [2023-11-21 22:16:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:57,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819427571] [2023-11-21 22:16:57,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819427571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:57,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:57,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:16:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638029251] [2023-11-21 22:16:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:57,454 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:57,556 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2023-11-21 22:16:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 22:16:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:57,558 INFO L225 Difference]: With dead ends: 139 [2023-11-21 22:16:57,558 INFO L226 Difference]: Without dead ends: 139 [2023-11-21 22:16:57,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:57,559 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:57,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 174 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:16:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-21 22:16:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2023-11-21 22:16:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 93 states have (on average 1.6881720430107527) internal successors, (157), 127 states have internal predecessors, (157), 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) [2023-11-21 22:16:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 157 transitions. [2023-11-21 22:16:57,563 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 157 transitions. Word has length 13 [2023-11-21 22:16:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:57,563 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 157 transitions. [2023-11-21 22:16:57,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 157 transitions. [2023-11-21 22:16:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:16:57,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:57,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:57,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:16:57,565 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:57,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash -321079883, now seen corresponding path program 1 times [2023-11-21 22:16:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430880339] [2023-11-21 22:16:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430880339] [2023-11-21 22:16:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430880339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:16:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288824756] [2023-11-21 22:16:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:57,668 INFO L87 Difference]: Start difference. First operand 128 states and 157 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:57,837 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2023-11-21 22:16:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:57,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 22:16:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:57,838 INFO L225 Difference]: With dead ends: 127 [2023-11-21 22:16:57,838 INFO L226 Difference]: Without dead ends: 127 [2023-11-21 22:16:57,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:57,839 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:57,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 175 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-21 22:16:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-21 22:16:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.6666666666666667) internal successors, (155), 126 states have internal predecessors, (155), 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) [2023-11-21 22:16:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2023-11-21 22:16:57,843 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 155 transitions. Word has length 13 [2023-11-21 22:16:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:57,843 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 155 transitions. [2023-11-21 22:16:57,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 155 transitions. [2023-11-21 22:16:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:16:57,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:57,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:57,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:16:57,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:57,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,845 INFO L85 PathProgramCache]: Analyzing trace with hash -321079882, now seen corresponding path program 1 times [2023-11-21 22:16:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416573598] [2023-11-21 22:16:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416573598] [2023-11-21 22:16:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416573598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:58,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:16:58,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547504161] [2023-11-21 22:16:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:58,059 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:58,228 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2023-11-21 22:16:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 22:16:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:58,230 INFO L225 Difference]: With dead ends: 126 [2023-11-21 22:16:58,230 INFO L226 Difference]: Without dead ends: 126 [2023-11-21 22:16:58,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:58,231 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:58,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 157 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:16:58,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-21 22:16:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-21 22:16:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 125 states have internal predecessors, (153), 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) [2023-11-21 22:16:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2023-11-21 22:16:58,235 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 13 [2023-11-21 22:16:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:58,235 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2023-11-21 22:16:58,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2023-11-21 22:16:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:16:58,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:58,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:58,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:16:58,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:58,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1686592360, now seen corresponding path program 1 times [2023-11-21 22:16:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043340930] [2023-11-21 22:16:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:58,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:58,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043340930] [2023-11-21 22:16:58,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043340930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:58,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:58,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:16:58,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838115373] [2023-11-21 22:16:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:58,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:16:58,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:16:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:16:58,624 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-21 22:16:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:16:59,042 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2023-11-21 22:16:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:16:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 15 [2023-11-21 22:16:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:16:59,044 INFO L225 Difference]: With dead ends: 146 [2023-11-21 22:16:59,044 INFO L226 Difference]: Without dead ends: 146 [2023-11-21 22:16:59,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:16:59,045 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 227 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:16:59,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 134 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:16:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-21 22:16:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 130. [2023-11-21 22:16:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 129 states have internal predecessors, (158), 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) [2023-11-21 22:16:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2023-11-21 22:16:59,049 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 15 [2023-11-21 22:16:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:16:59,050 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2023-11-21 22:16:59,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-21 22:16:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2023-11-21 22:16:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:16:59,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:16:59,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:59,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:16:59,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:16:59,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1686592359, now seen corresponding path program 1 times [2023-11-21 22:16:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485962147] [2023-11-21 22:16:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485962147] [2023-11-21 22:16:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485962147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:59,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:16:59,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881760998] [2023-11-21 22:16:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:59,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:16:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:16:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:16:59,536 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-21 22:17:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:00,231 INFO L93 Difference]: Finished difference Result 175 states and 205 transitions. [2023-11-21 22:17:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:17:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 15 [2023-11-21 22:17:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:00,233 INFO L225 Difference]: With dead ends: 175 [2023-11-21 22:17:00,234 INFO L226 Difference]: Without dead ends: 175 [2023-11-21 22:17:00,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:17:00,235 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 315 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:00,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 154 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:17:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-21 22:17:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 143. [2023-11-21 22:17:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.5727272727272728) internal successors, (173), 142 states have internal predecessors, (173), 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) [2023-11-21 22:17:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2023-11-21 22:17:00,240 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 15 [2023-11-21 22:17:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:00,240 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-21 22:17:00,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-21 22:17:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2023-11-21 22:17:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:17:00,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:00,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:17:00,242 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:00,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash 680023598, now seen corresponding path program 1 times [2023-11-21 22:17:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066264000] [2023-11-21 22:17:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066264000] [2023-11-21 22:17:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066264000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:00,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:00,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:17:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57953781] [2023-11-21 22:17:00,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:00,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:17:00,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:17:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:00,526 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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) [2023-11-21 22:17:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:00,862 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-11-21 22:17:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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 15 [2023-11-21 22:17:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:00,864 INFO L225 Difference]: With dead ends: 145 [2023-11-21 22:17:00,864 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 22:17:00,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:00,865 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 111 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:00,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 151 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 22:17:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2023-11-21 22:17:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 110 states have (on average 1.5545454545454545) internal successors, (171), 141 states have internal predecessors, (171), 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) [2023-11-21 22:17:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2023-11-21 22:17:00,869 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 15 [2023-11-21 22:17:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:00,870 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2023-11-21 22:17:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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) [2023-11-21 22:17:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2023-11-21 22:17:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:17:00,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:00,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:00,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:17:00,871 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:00,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:00,871 INFO L85 PathProgramCache]: Analyzing trace with hash 680023599, now seen corresponding path program 1 times [2023-11-21 22:17:00,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:00,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092101092] [2023-11-21 22:17:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:00,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092101092] [2023-11-21 22:17:01,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092101092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:17:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544280095] [2023-11-21 22:17:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:17:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:17:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:01,160 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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) [2023-11-21 22:17:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,495 INFO L93 Difference]: Finished difference Result 144 states and 173 transitions. [2023-11-21 22:17:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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 15 [2023-11-21 22:17:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,497 INFO L225 Difference]: With dead ends: 144 [2023-11-21 22:17:01,497 INFO L226 Difference]: Without dead ends: 144 [2023-11-21 22:17:01,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:01,498 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 110 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 124 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-21 22:17:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2023-11-21 22:17:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 140 states have internal predecessors, (169), 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) [2023-11-21 22:17:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 169 transitions. [2023-11-21 22:17:01,502 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 169 transitions. Word has length 15 [2023-11-21 22:17:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,502 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 169 transitions. [2023-11-21 22:17:01,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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) [2023-11-21 22:17:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 169 transitions. [2023-11-21 22:17:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:17:01,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:17:01,504 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:01,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1257151090, now seen corresponding path program 1 times [2023-11-21 22:17:01,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676496121] [2023-11-21 22:17:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676496121] [2023-11-21 22:17:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676496121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427240048] [2023-11-21 22:17:01,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:01,608 INFO L87 Difference]: Start difference. First operand 141 states and 169 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-21 22:17:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,764 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2023-11-21 22:17:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2023-11-21 22:17:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,766 INFO L225 Difference]: With dead ends: 140 [2023-11-21 22:17:01,766 INFO L226 Difference]: Without dead ends: 140 [2023-11-21 22:17:01,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:01,767 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 5 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 165 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-21 22:17:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-21 22:17:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.518181818181818) internal successors, (167), 139 states have internal predecessors, (167), 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) [2023-11-21 22:17:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 167 transitions. [2023-11-21 22:17:01,771 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 167 transitions. Word has length 15 [2023-11-21 22:17:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,771 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 167 transitions. [2023-11-21 22:17:01,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-21 22:17:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 167 transitions. [2023-11-21 22:17:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:17:01,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:17:01,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:01,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1257151091, now seen corresponding path program 1 times [2023-11-21 22:17:01,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367039378] [2023-11-21 22:17:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367039378] [2023-11-21 22:17:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367039378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882280866] [2023-11-21 22:17:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:01,943 INFO L87 Difference]: Start difference. First operand 140 states and 167 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-21 22:17:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:02,122 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2023-11-21 22:17:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2023-11-21 22:17:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:02,123 INFO L225 Difference]: With dead ends: 139 [2023-11-21 22:17:02,123 INFO L226 Difference]: Without dead ends: 139 [2023-11-21 22:17:02,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:02,124 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:02,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 147 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-21 22:17:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-21 22:17:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.5) internal successors, (165), 138 states have internal predecessors, (165), 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) [2023-11-21 22:17:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 165 transitions. [2023-11-21 22:17:02,128 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 165 transitions. Word has length 15 [2023-11-21 22:17:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:02,128 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 165 transitions. [2023-11-21 22:17:02,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-21 22:17:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 165 transitions. [2023-11-21 22:17:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 22:17:02,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:02,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:02,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 22:17:02,129 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:02,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:02,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1236489084, now seen corresponding path program 1 times [2023-11-21 22:17:02,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139361846] [2023-11-21 22:17:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:02,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:02,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139361846] [2023-11-21 22:17:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139361846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:02,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:17:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720561647] [2023-11-21 22:17:02,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:17:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:02,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:17:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:02,401 INFO L87 Difference]: Start difference. First operand 139 states and 165 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:02,717 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2023-11-21 22:17:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:17:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-21 22:17:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:02,719 INFO L225 Difference]: With dead ends: 141 [2023-11-21 22:17:02,719 INFO L226 Difference]: Without dead ends: 141 [2023-11-21 22:17:02,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:17:02,720 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 103 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:02,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 147 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-21 22:17:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2023-11-21 22:17:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 110 states have (on average 1.490909090909091) internal successors, (164), 137 states have internal predecessors, (164), 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) [2023-11-21 22:17:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2023-11-21 22:17:02,724 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 17 [2023-11-21 22:17:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:02,724 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2023-11-21 22:17:02,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2023-11-21 22:17:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 22:17:02,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:02,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:02,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-21 22:17:02,725 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:02,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1236489085, now seen corresponding path program 1 times [2023-11-21 22:17:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271430193] [2023-11-21 22:17:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271430193] [2023-11-21 22:17:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271430193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:03,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:17:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380622306] [2023-11-21 22:17:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:17:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:17:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:03,072 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:03,504 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2023-11-21 22:17:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-21 22:17:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:03,506 INFO L225 Difference]: With dead ends: 140 [2023-11-21 22:17:03,506 INFO L226 Difference]: Without dead ends: 140 [2023-11-21 22:17:03,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:03,507 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 97 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:03,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 166 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-21 22:17:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2023-11-21 22:17:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 110 states have (on average 1.481818181818182) internal successors, (163), 136 states have internal predecessors, (163), 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) [2023-11-21 22:17:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 163 transitions. [2023-11-21 22:17:03,510 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 163 transitions. Word has length 17 [2023-11-21 22:17:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:03,511 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 163 transitions. [2023-11-21 22:17:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 163 transitions. [2023-11-21 22:17:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 22:17:03,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:03,511 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] [2023-11-21 22:17:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-21 22:17:03,515 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:03,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1240712948, now seen corresponding path program 1 times [2023-11-21 22:17:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112427575] [2023-11-21 22:17:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:03,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112427575] [2023-11-21 22:17:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112427575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:03,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377571343] [2023-11-21 22:17:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:17:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:17:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:03,808 INFO L87 Difference]: Start difference. First operand 137 states and 163 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2023-11-21 22:17:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:04,304 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2023-11-21 22:17:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:17:04,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2023-11-21 22:17:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:04,307 INFO L225 Difference]: With dead ends: 160 [2023-11-21 22:17:04,308 INFO L226 Difference]: Without dead ends: 160 [2023-11-21 22:17:04,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:17:04,308 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 229 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:04,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 242 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:17:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-21 22:17:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 139. [2023-11-21 22:17:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 112 states have (on average 1.4732142857142858) internal successors, (165), 138 states have internal predecessors, (165), 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) [2023-11-21 22:17:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 165 transitions. [2023-11-21 22:17:04,312 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 165 transitions. Word has length 20 [2023-11-21 22:17:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:04,313 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 165 transitions. [2023-11-21 22:17:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2023-11-21 22:17:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 165 transitions. [2023-11-21 22:17:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 22:17:04,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:04,313 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:04,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-21 22:17:04,314 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:04,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 409345024, now seen corresponding path program 1 times [2023-11-21 22:17:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641136077] [2023-11-21 22:17:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641136077] [2023-11-21 22:17:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641136077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622880250] [2023-11-21 22:17:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:04,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:04,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:04,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:17:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:17:04,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:17:04,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:17:04,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-21 22:17:04,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-21 22:17:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:04,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622880250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:04,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:17:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-11-21 22:17:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979122495] [2023-11-21 22:17:04,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:04,958 INFO L87 Difference]: Start difference. First operand 139 states and 165 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-21 22:17:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:05,062 INFO L93 Difference]: Finished difference Result 144 states and 170 transitions. [2023-11-21 22:17:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2023-11-21 22:17:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:05,064 INFO L225 Difference]: With dead ends: 144 [2023-11-21 22:17:05,065 INFO L226 Difference]: Without dead ends: 144 [2023-11-21 22:17:05,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:05,066 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 8 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:05,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 167 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-21 22:17:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2023-11-21 22:17:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 140 states have internal predecessors, (167), 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) [2023-11-21 22:17:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2023-11-21 22:17:05,071 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 23 [2023-11-21 22:17:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:05,072 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2023-11-21 22:17:05,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-21 22:17:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2023-11-21 22:17:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 22:17:05,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:05,075 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] [2023-11-21 22:17:05,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:17:05,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:05,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 409347814, now seen corresponding path program 1 times [2023-11-21 22:17:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838486518] [2023-11-21 22:17:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:05,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838486518] [2023-11-21 22:17:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838486518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797155401] [2023-11-21 22:17:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:05,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:17:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:05,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 22:17:05,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:06,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 22:17:06,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:17:06,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 63 [2023-11-21 22:17:06,582 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-21 22:17:06,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2023-11-21 22:17:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:06,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:07,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-11-21 22:17:07,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2023-11-21 22:17:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:07,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797155401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:07,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:17:07,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-21 22:17:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534901236] [2023-11-21 22:17:07,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:07,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:17:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:17:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=566, Unknown=4, NotChecked=0, Total=650 [2023-11-21 22:17:07,393 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2023-11-21 22:17:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:09,002 INFO L93 Difference]: Finished difference Result 176 states and 205 transitions. [2023-11-21 22:17:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:17:09,003 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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 23 [2023-11-21 22:17:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:09,004 INFO L225 Difference]: With dead ends: 176 [2023-11-21 22:17:09,004 INFO L226 Difference]: Without dead ends: 171 [2023-11-21 22:17:09,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=1050, Unknown=4, NotChecked=0, Total=1260 [2023-11-21 22:17:09,006 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 145 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:09,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 450 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 818 Invalid, 2 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 22:17:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-21 22:17:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2023-11-21 22:17:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 127 states have (on average 1.4251968503937007) internal successors, (181), 153 states have internal predecessors, (181), 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) [2023-11-21 22:17:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2023-11-21 22:17:09,033 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 23 [2023-11-21 22:17:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:09,033 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2023-11-21 22:17:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2023-11-21 22:17:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2023-11-21 22:17:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 22:17:09,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:09,035 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:09,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:09,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:09,255 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:09,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash 589922832, now seen corresponding path program 1 times [2023-11-21 22:17:09,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725768967] [2023-11-21 22:17:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725768967] [2023-11-21 22:17:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725768967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183684846] [2023-11-21 22:17:09,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:09,443 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-21 22:17:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:09,652 INFO L93 Difference]: Finished difference Result 169 states and 191 transitions. [2023-11-21 22:17:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 26 [2023-11-21 22:17:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:09,654 INFO L225 Difference]: With dead ends: 169 [2023-11-21 22:17:09,654 INFO L226 Difference]: Without dead ends: 169 [2023-11-21 22:17:09,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:09,655 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 92 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:09,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 88 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:09,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-21 22:17:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2023-11-21 22:17:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 127 states have (on average 1.4094488188976377) internal successors, (179), 153 states have internal predecessors, (179), 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) [2023-11-21 22:17:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 179 transitions. [2023-11-21 22:17:09,659 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 179 transitions. Word has length 26 [2023-11-21 22:17:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:09,659 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 179 transitions. [2023-11-21 22:17:09,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-21 22:17:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 179 transitions. [2023-11-21 22:17:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 22:17:09,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:09,660 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] [2023-11-21 22:17:09,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-21 22:17:09,661 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:09,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash 589925622, now seen corresponding path program 1 times [2023-11-21 22:17:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253305572] [2023-11-21 22:17:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253305572] [2023-11-21 22:17:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253305572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933960202] [2023-11-21 22:17:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:09,720 INFO L87 Difference]: Start difference. First operand 154 states and 179 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-21 22:17:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:09,802 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2023-11-21 22:17:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:09,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-21 22:17:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:09,804 INFO L225 Difference]: With dead ends: 180 [2023-11-21 22:17:09,804 INFO L226 Difference]: Without dead ends: 180 [2023-11-21 22:17:09,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:09,805 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:09,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 171 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-21 22:17:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 154. [2023-11-21 22:17:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 153 states have internal predecessors, (178), 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) [2023-11-21 22:17:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2023-11-21 22:17:09,810 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 26 [2023-11-21 22:17:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:09,810 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2023-11-21 22:17:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-21 22:17:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2023-11-21 22:17:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 22:17:09,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:09,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-21 22:17:09,812 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:09,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1155811380, now seen corresponding path program 1 times [2023-11-21 22:17:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892603951] [2023-11-21 22:17:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892603951] [2023-11-21 22:17:10,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892603951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360535361] [2023-11-21 22:17:10,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:10,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:10,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:17:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-21 22:17:10,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:10,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-21 22:17:10,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-21 22:17:11,062 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-21 22:17:11,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-21 22:17:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:17:11,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-21 22:17:11,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:17:11,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-21 22:17:11,229 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-21 22:17:11,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2023-11-21 22:17:11,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2023-11-21 22:17:11,340 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-21 22:17:11,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-21 22:17:11,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2023-11-21 22:17:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:11,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:11,790 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_770 (Array Int Int)) (v_ArrVal_773 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_773)) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_770 (Array Int Int)) (v_ArrVal_772 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_771) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_770) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_772) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2) 0)))) is different from false [2023-11-21 22:17:11,806 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset| |c_ULTIMATE.start_main_#t~malloc14#1.base|))) (.cse2 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_770 (Array Int Int)) (v_ArrVal_773 (Array Int Int))) (= (select (select (let ((.cse0 (store .cse1 |c_ULTIMATE.start_main_#t~malloc14#1.base| v_ArrVal_770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_773)) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_770 (Array Int Int)) (v_ArrVal_768 Int) (v_ArrVal_772 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset| v_ArrVal_768)) |c_ULTIMATE.start_main_#t~malloc14#1.base| v_ArrVal_771) (select (select (store .cse1 |c_ULTIMATE.start_main_#t~malloc14#1.base| v_ArrVal_770) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_772) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2) 0)))) is different from false [2023-11-21 22:17:11,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:17:11,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 116 [2023-11-21 22:17:12,277 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~root~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_80| Int)) (or (< |c_ULTIMATE.start_main_~root~0#1.offset| |v_ULTIMATE.start_main_~n~0#1.offset_80|) (forall ((v_prenex_1 Int) (v_ArrVal_771 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_ArrVal_768 Int) (v_ArrVal_772 (Array Int Int))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~root~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~root~0#1.base|) |v_ULTIMATE.start_main_~n~0#1.offset_80| v_ArrVal_768)) v_prenex_1 v_ArrVal_771) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse0 |v_ULTIMATE.start_main_~n~0#1.offset_80| v_prenex_1)) v_prenex_1 v_prenex_2) |c_ULTIMATE.start_main_~root~0#1.base|) |v_ULTIMATE.start_main_~n~0#1.offset_80|) v_ArrVal_772) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) 0) (= |c_ULTIMATE.start_main_~root~0#1.base| v_prenex_1))))) (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_80| Int)) (or (< |c_ULTIMATE.start_main_~root~0#1.offset| |v_ULTIMATE.start_main_~n~0#1.offset_80|) (forall ((|v_ULTIMATE.start_main_#t~malloc14#1.base_15| Int) (v_ArrVal_770 (Array Int Int)) (v_ArrVal_773 (Array Int Int))) (or (= (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~root~0#1.base| (store .cse0 |v_ULTIMATE.start_main_~n~0#1.offset_80| |v_ULTIMATE.start_main_#t~malloc14#1.base_15|)) |v_ULTIMATE.start_main_#t~malloc14#1.base_15| v_ArrVal_770))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~root~0#1.base|) |v_ULTIMATE.start_main_~n~0#1.offset_80|) v_ArrVal_773)) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) 0) (= |c_ULTIMATE.start_main_~root~0#1.base| |v_ULTIMATE.start_main_#t~malloc14#1.base_15|))))))) is different from false [2023-11-21 22:17:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-21 22:17:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360535361] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:12,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:17:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2023-11-21 22:17:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201196969] [2023-11-21 22:17:12,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-21 22:17:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-21 22:17:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=503, Unknown=81, NotChecked=156, Total=870 [2023-11-21 22:17:12,357 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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) [2023-11-21 22:17:14,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:16,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:18,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:20,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:22,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:29,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:31,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:33,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:35,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:17:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:36,532 INFO L93 Difference]: Finished difference Result 231 states and 271 transitions. [2023-11-21 22:17:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:17:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 26 [2023-11-21 22:17:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:36,534 INFO L225 Difference]: With dead ends: 231 [2023-11-21 22:17:36,534 INFO L226 Difference]: Without dead ends: 231 [2023-11-21 22:17:36,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=310, Invalid=1004, Unknown=104, NotChecked=222, Total=1640 [2023-11-21 22:17:36,536 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 197 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 37 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:36,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 598 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1082 Invalid, 9 Unknown, 510 Unchecked, 19.5s Time] [2023-11-21 22:17:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-21 22:17:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 169. [2023-11-21 22:17:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 142 states have (on average 1.3873239436619718) internal successors, (197), 168 states have internal predecessors, (197), 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) [2023-11-21 22:17:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 197 transitions. [2023-11-21 22:17:36,541 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 197 transitions. Word has length 26 [2023-11-21 22:17:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:36,542 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 197 transitions. [2023-11-21 22:17:36,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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) [2023-11-21 22:17:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 197 transitions. [2023-11-21 22:17:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 22:17:36,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:36,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:36,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:36,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-21 22:17:36,760 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-21 22:17:36,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash -848125159, now seen corresponding path program 1 times [2023-11-21 22:17:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727656006] [2023-11-21 22:17:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:36,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:37,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727656006] [2023-11-21 22:17:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727656006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405331788] [2023-11-21 22:17:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:37,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:37,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:37,438 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:37,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113f5091-85f1-4d70-8d41-4286ce2d17f4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:17:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:37,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-21 22:17:37,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:37,692 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-21 22:17:37,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-21 22:17:37,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 22:17:37,839 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-21 22:17:37,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2023-11-21 22:17:37,903 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-21 22:17:37,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2023-11-21 22:17:38,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-21 22:17:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:38,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:38,244 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_844))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_845)) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2023-11-21 22:17:38,251 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_844))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_845))) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2023-11-21 22:17:38,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:17:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2023-11-21 22:17:38,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:17:38,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 145 [2023-11-21 22:17:38,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 86 [2023-11-21 22:17:38,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:17:38,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74