./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu --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 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:13,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:13,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:54:13,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:13,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:13,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:13,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:13,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:13,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:13,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:13,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:13,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:13,905 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:13,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:13,906 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:13,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:13,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:13,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:13,909 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:13,909 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:13,910 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:13,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:13,911 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:13,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:13,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:13,912 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:13,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:13,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:13,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:13,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:13,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:13,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:13,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:13,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:13,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:13,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:13,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:13,918 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:13,919 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_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c [2023-11-19 07:54:14,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:14,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:14,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:14,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:14,255 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:14,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/forester-heap/dll-circular-2.i [2023-11-19 07:54:17,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:17,743 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:17,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/sv-benchmarks/c/forester-heap/dll-circular-2.i [2023-11-19 07:54:17,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/data/08e7bcf72/207fdd8d15bd40ddb773112ddc76ab4c/FLAG8baf7f019 [2023-11-19 07:54:17,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/data/08e7bcf72/207fdd8d15bd40ddb773112ddc76ab4c [2023-11-19 07:54:17,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:17,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:17,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:17,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:17,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:17,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:17" (1/1) ... [2023-11-19 07:54:17,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ea8854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17, skipping insertion in model container [2023-11-19 07:54:17,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:17" (1/1) ... [2023-11-19 07:54:17,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:18,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:18,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:18,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:18,358 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:18,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18 WrapperNode [2023-11-19 07:54:18,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:18,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:18,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:18,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:18,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,432 INFO L138 Inliner]: procedures = 119, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2023-11-19 07:54:18,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:18,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:18,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:18,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:18,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:18,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:18,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:18,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:18,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (1/1) ... [2023-11-19 07:54:18,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:18,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:18,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:54:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:54:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:54:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:18,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:18,740 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:18,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:19,185 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:19,195 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:19,195 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-19 07:54:19,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:19 BoogieIcfgContainer [2023-11-19 07:54:19,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:19,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:19,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:19,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:19,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:17" (1/3) ... [2023-11-19 07:54:19,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d278b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:19, skipping insertion in model container [2023-11-19 07:54:19,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:18" (2/3) ... [2023-11-19 07:54:19,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d278b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:19, skipping insertion in model container [2023-11-19 07:54:19,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:19" (3/3) ... [2023-11-19 07:54:19,211 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2023-11-19 07:54:19,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:19,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-11-19 07:54:19,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:19,291 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;@4cf58dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:19,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-19 07:54:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 62 states have (on average 2.129032258064516) internal successors, (132), 112 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:54:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:54:19,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:19,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:54:19,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:19,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-19 07:54:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314643081] [2023-11-19 07:54:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:19,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314643081] [2023-11-19 07:54:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314643081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:19,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:19,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116962601] [2023-11-19 07:54:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:19,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:19,642 INFO L87 Difference]: Start difference. First operand has 117 states, 62 states have (on average 2.129032258064516) internal successors, (132), 112 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:19,834 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2023-11-19 07:54:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:19,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:54:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:19,848 INFO L225 Difference]: With dead ends: 117 [2023-11-19 07:54:19,849 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 07:54:19,850 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 [2023-11-19 07:54:19,854 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 92 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:19,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 84 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 07:54:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2023-11-19 07:54:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 57 states have (on average 1.9298245614035088) internal successors, (110), 103 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2023-11-19 07:54:19,897 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 3 [2023-11-19 07:54:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2023-11-19 07:54:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2023-11-19 07:54:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:54:19,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:19,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:54:19,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:19,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:19,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-19 07:54:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:19,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419667329] [2023-11-19 07:54:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:20,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419667329] [2023-11-19 07:54:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419667329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:20,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:20,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:20,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724329749] [2023-11-19 07:54:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:20,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:20,043 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:20,189 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2023-11-19 07:54:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:54:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:20,196 INFO L225 Difference]: With dead ends: 112 [2023-11-19 07:54:20,196 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:54:20,202 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 [2023-11-19 07:54:20,204 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 89 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:20,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:54:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-11-19 07:54:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.8421052631578947) internal successors, (105), 98 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-11-19 07:54:20,222 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 3 [2023-11-19 07:54:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:20,223 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-11-19 07:54:20,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-11-19 07:54:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:54:20,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:20,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:20,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:20,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:20,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 919164529, now seen corresponding path program 1 times [2023-11-19 07:54:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:20,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942885129] [2023-11-19 07:54:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:20,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942885129] [2023-11-19 07:54:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942885129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:20,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:20,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:20,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553187028] [2023-11-19 07:54:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:20,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:20,477 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:20,614 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2023-11-19 07:54:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 07:54:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:20,616 INFO L225 Difference]: With dead ends: 97 [2023-11-19 07:54:20,616 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 07:54:20,616 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 [2023-11-19 07:54:20,618 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 145 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:20,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 59 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 07:54:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-11-19 07:54:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.631578947368421) internal successors, (93), 86 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-19 07:54:20,627 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 9 [2023-11-19 07:54:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:20,627 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-19 07:54:20,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-19 07:54:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:54:20,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:20,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:20,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:20,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:20,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash 919164530, now seen corresponding path program 1 times [2023-11-19 07:54:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758271279] [2023-11-19 07:54:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:20,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:20,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758271279] [2023-11-19 07:54:20,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758271279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:20,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763744086] [2023-11-19 07:54:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:20,845 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:21,036 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2023-11-19 07:54:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 07:54:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:21,039 INFO L225 Difference]: With dead ends: 113 [2023-11-19 07:54:21,039 INFO L226 Difference]: Without dead ends: 113 [2023-11-19 07:54:21,039 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 [2023-11-19 07:54:21,051 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 100 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:21,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 104 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-19 07:54:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2023-11-19 07:54:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 95 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-11-19 07:54:21,060 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 9 [2023-11-19 07:54:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:21,060 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-11-19 07:54:21,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-11-19 07:54:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:54:21,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:21,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:21,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:21,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931275, now seen corresponding path program 1 times [2023-11-19 07:54:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:21,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2937268] [2023-11-19 07:54:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2937268] [2023-11-19 07:54:21,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2937268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948300491] [2023-11-19 07:54:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:21,313 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:21,461 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2023-11-19 07:54:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 07:54:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:21,463 INFO L225 Difference]: With dead ends: 96 [2023-11-19 07:54:21,463 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:54:21,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:21,465 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 10 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:21,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 237 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:54:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-19 07:54:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 94 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2023-11-19 07:54:21,473 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 12 [2023-11-19 07:54:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:21,473 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2023-11-19 07:54:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2023-11-19 07:54:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:54:21,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:21,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:21,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931274, now seen corresponding path program 1 times [2023-11-19 07:54:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669064542] [2023-11-19 07:54:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669064542] [2023-11-19 07:54:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669064542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538964839] [2023-11-19 07:54:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:21,722 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:21,897 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2023-11-19 07:54:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:21,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 07:54:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:21,899 INFO L225 Difference]: With dead ends: 95 [2023-11-19 07:54:21,902 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 07:54:21,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:21,905 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:21,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 232 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 07:54:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-19 07:54:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 93 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2023-11-19 07:54:21,919 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 12 [2023-11-19 07:54:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:21,920 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2023-11-19 07:54:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2023-11-19 07:54:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:54:21,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:21,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:21,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1616812677, now seen corresponding path program 1 times [2023-11-19 07:54:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508601610] [2023-11-19 07:54:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:22,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508601610] [2023-11-19 07:54:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508601610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:54:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108591887] [2023-11-19 07:54:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:22,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:22,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:22,273 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:22,511 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2023-11-19 07:54:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:54:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 07:54:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:22,513 INFO L225 Difference]: With dead ends: 176 [2023-11-19 07:54:22,513 INFO L226 Difference]: Without dead ends: 176 [2023-11-19 07:54:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:22,514 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 352 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:22,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 297 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-19 07:54:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 98. [2023-11-19 07:54:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 96 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-11-19 07:54:22,521 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 15 [2023-11-19 07:54:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:22,521 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-11-19 07:54:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-11-19 07:54:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:54:22,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:22,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:22,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:22,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 606345282, now seen corresponding path program 1 times [2023-11-19 07:54:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761132935] [2023-11-19 07:54:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:22,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:22,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761132935] [2023-11-19 07:54:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761132935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:22,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303292715] [2023-11-19 07:54:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:22,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:22,785 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-11-19 07:54:23,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:23,120 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2023-11-19 07:54:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:54:23,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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 14 [2023-11-19 07:54:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:23,122 INFO L225 Difference]: With dead ends: 139 [2023-11-19 07:54:23,122 INFO L226 Difference]: Without dead ends: 139 [2023-11-19 07:54:23,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:23,123 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 270 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:23,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 223 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-19 07:54:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 100. [2023-11-19 07:54:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 98 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2023-11-19 07:54:23,128 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 14 [2023-11-19 07:54:23,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:23,129 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2023-11-19 07:54:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-11-19 07:54:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2023-11-19 07:54:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:54:23,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:23,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:23,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:23,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 606345283, now seen corresponding path program 1 times [2023-11-19 07:54:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935898661] [2023-11-19 07:54:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:23,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:23,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935898661] [2023-11-19 07:54:23,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935898661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:23,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634390210] [2023-11-19 07:54:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:23,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:23,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:23,560 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-11-19 07:54:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:23,967 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2023-11-19 07:54:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:54:23,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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 14 [2023-11-19 07:54:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:23,974 INFO L225 Difference]: With dead ends: 170 [2023-11-19 07:54:23,974 INFO L226 Difference]: Without dead ends: 170 [2023-11-19 07:54:23,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:23,977 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 181 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:23,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 283 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:54:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-19 07:54:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 112. [2023-11-19 07:54:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 110 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2023-11-19 07:54:23,990 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 14 [2023-11-19 07:54:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:23,990 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2023-11-19 07:54:23,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-11-19 07:54:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2023-11-19 07:54:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:54:23,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:23,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:54:23,992 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:23,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618057, now seen corresponding path program 1 times [2023-11-19 07:54:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678944799] [2023-11-19 07:54:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678944799] [2023-11-19 07:54:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678944799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:54:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492790428] [2023-11-19 07:54:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:24,235 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:24,613 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2023-11-19 07:54:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:54:24,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:54:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:24,615 INFO L225 Difference]: With dead ends: 120 [2023-11-19 07:54:24,615 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 07:54:24,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:54:24,616 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 166 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:24,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 192 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 07:54:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-11-19 07:54:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 109 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2023-11-19 07:54:24,621 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 16 [2023-11-19 07:54:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:24,621 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2023-11-19 07:54:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2023-11-19 07:54:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:54:24,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:24,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:54:24,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:24,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618056, now seen corresponding path program 1 times [2023-11-19 07:54:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872300543] [2023-11-19 07:54:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:24,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:24,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872300543] [2023-11-19 07:54:24,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872300543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:54:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116249111] [2023-11-19 07:54:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:54:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:54:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:24,953 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:25,599 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2023-11-19 07:54:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:54:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:54:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:25,600 INFO L225 Difference]: With dead ends: 115 [2023-11-19 07:54:25,600 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 07:54:25,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:54:25,602 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 156 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:25,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 252 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:54:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 07:54:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2023-11-19 07:54:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2023-11-19 07:54:25,608 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 16 [2023-11-19 07:54:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:25,609 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2023-11-19 07:54:25,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2023-11-19 07:54:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:54:25,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:25,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:54:25,614 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1000054462, now seen corresponding path program 1 times [2023-11-19 07:54:25,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:25,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81635671] [2023-11-19 07:54:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81635671] [2023-11-19 07:54:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81635671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:26,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:54:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296124898] [2023-11-19 07:54:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:26,033 INFO L87 Difference]: Start difference. First operand 99 states and 115 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) [2023-11-19 07:54:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:26,435 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2023-11-19 07:54:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:54:26,436 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 [2023-11-19 07:54:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:26,437 INFO L225 Difference]: With dead ends: 145 [2023-11-19 07:54:26,437 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 07:54:26,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:54:26,439 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 332 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:26,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 328 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 07:54:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 99. [2023-11-19 07:54:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 97 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2023-11-19 07:54:26,443 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 17 [2023-11-19 07:54:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:26,444 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2023-11-19 07:54:26,444 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) [2023-11-19 07:54:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2023-11-19 07:54:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:54:26,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:26,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:26,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:54:26,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:26,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1000054461, now seen corresponding path program 1 times [2023-11-19 07:54:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061627143] [2023-11-19 07:54:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061627143] [2023-11-19 07:54:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061627143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:26,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:26,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478714455] [2023-11-19 07:54:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:26,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:26,878 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2023-11-19 07:54:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:27,284 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2023-11-19 07:54:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 [2023-11-19 07:54:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:27,286 INFO L225 Difference]: With dead ends: 155 [2023-11-19 07:54:27,286 INFO L226 Difference]: Without dead ends: 155 [2023-11-19 07:54:27,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:27,287 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 237 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:27,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 243 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:54:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-19 07:54:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 99. [2023-11-19 07:54:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2023-11-19 07:54:27,292 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 17 [2023-11-19 07:54:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:27,292 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2023-11-19 07:54:27,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2023-11-19 07:54:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2023-11-19 07:54:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:54:27,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:27,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:27,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:54:27,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:27,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash -936932038, now seen corresponding path program 1 times [2023-11-19 07:54:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:27,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741411069] [2023-11-19 07:54:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741411069] [2023-11-19 07:54:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741411069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:27,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:27,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45864887] [2023-11-19 07:54:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:27,542 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:54:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:27,814 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2023-11-19 07:54:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:54:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2023-11-19 07:54:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:27,816 INFO L225 Difference]: With dead ends: 137 [2023-11-19 07:54:27,816 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 07:54:27,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:27,817 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 246 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:27,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 220 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 07:54:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2023-11-19 07:54:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.5) internal successors, (141), 114 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 144 transitions. [2023-11-19 07:54:27,823 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 144 transitions. Word has length 18 [2023-11-19 07:54:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:27,823 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 144 transitions. [2023-11-19 07:54:27,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:54:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 144 transitions. [2023-11-19 07:54:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:54:27,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:27,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:27,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:54:27,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:27,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash -936932037, now seen corresponding path program 1 times [2023-11-19 07:54:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284409351] [2023-11-19 07:54:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:28,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284409351] [2023-11-19 07:54:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284409351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:28,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915880628] [2023-11-19 07:54:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:28,244 INFO L87 Difference]: Start difference. First operand 116 states and 144 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:54:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:28,583 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2023-11-19 07:54:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:54:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2023-11-19 07:54:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:28,585 INFO L225 Difference]: With dead ends: 158 [2023-11-19 07:54:28,585 INFO L226 Difference]: Without dead ends: 158 [2023-11-19 07:54:28,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:28,586 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 220 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:28,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 198 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-19 07:54:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 121. [2023-11-19 07:54:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 119 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2023-11-19 07:54:28,591 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 18 [2023-11-19 07:54:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:28,592 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2023-11-19 07:54:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:54:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2023-11-19 07:54:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:54:28,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:28,593 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] [2023-11-19 07:54:28,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:54:28,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:28,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash 850271077, now seen corresponding path program 1 times [2023-11-19 07:54:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428525436] [2023-11-19 07:54:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:28,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428525436] [2023-11-19 07:54:28,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428525436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:28,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:28,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876898745] [2023-11-19 07:54:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:28,828 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2023-11-19 07:54:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:29,060 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2023-11-19 07:54:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:54:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:29,062 INFO L225 Difference]: With dead ends: 154 [2023-11-19 07:54:29,062 INFO L226 Difference]: Without dead ends: 154 [2023-11-19 07:54:29,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:29,063 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 213 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:29,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 242 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-19 07:54:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 122. [2023-11-19 07:54:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.47) internal successors, (147), 120 states have internal predecessors, (147), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2023-11-19 07:54:29,069 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 21 [2023-11-19 07:54:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:29,069 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2023-11-19 07:54:29,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2023-11-19 07:54:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2023-11-19 07:54:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:54:29,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:29,071 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] [2023-11-19 07:54:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:54:29,072 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2045537116, now seen corresponding path program 1 times [2023-11-19 07:54:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:29,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183003071] [2023-11-19 07:54:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183003071] [2023-11-19 07:54:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183003071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321577595] [2023-11-19 07:54:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:29,112 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:29,122 INFO L93 Difference]: Finished difference Result 125 states and 153 transitions. [2023-11-19 07:54:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:29,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 07:54:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:29,124 INFO L225 Difference]: With dead ends: 125 [2023-11-19 07:54:29,124 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 07:54:29,124 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 [2023-11-19 07:54:29,125 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:29,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 07:54:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-19 07:54:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 123 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2023-11-19 07:54:29,132 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 23 [2023-11-19 07:54:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:29,133 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2023-11-19 07:54:29,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2023-11-19 07:54:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:54:29,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:29,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:29,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:54:29,137 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:29,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1458080557, now seen corresponding path program 1 times [2023-11-19 07:54:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892688998] [2023-11-19 07:54:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:29,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892688998] [2023-11-19 07:54:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892688998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:29,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:29,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866522839] [2023-11-19 07:54:29,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:29,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:29,215 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-19 07:54:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:29,357 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2023-11-19 07:54:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:29,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-19 07:54:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:29,360 INFO L225 Difference]: With dead ends: 124 [2023-11-19 07:54:29,360 INFO L226 Difference]: Without dead ends: 124 [2023-11-19 07:54:29,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:29,361 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 28 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:29,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 176 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-19 07:54:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-19 07:54:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 122 states have internal predecessors, (147), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2023-11-19 07:54:29,365 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 22 [2023-11-19 07:54:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:29,365 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2023-11-19 07:54:29,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-19 07:54:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2023-11-19 07:54:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:54:29,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:29,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:29,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:54:29,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:29,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1458080558, now seen corresponding path program 1 times [2023-11-19 07:54:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34454618] [2023-11-19 07:54:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:29,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34454618] [2023-11-19 07:54:29,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34454618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:29,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:54:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633272745] [2023-11-19 07:54:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:54:29,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:54:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:29,856 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2023-11-19 07:54:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:30,260 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2023-11-19 07:54:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:54:30,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 22 [2023-11-19 07:54:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:30,262 INFO L225 Difference]: With dead ends: 142 [2023-11-19 07:54:30,262 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:54:30,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:54:30,263 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 230 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:30,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 342 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:54:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 124. [2023-11-19 07:54:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.4174757281553398) internal successors, (146), 122 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2023-11-19 07:54:30,270 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 22 [2023-11-19 07:54:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:30,271 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2023-11-19 07:54:30,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2023-11-19 07:54:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2023-11-19 07:54:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:54:30,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:30,272 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] [2023-11-19 07:54:30,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:54:30,273 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1782166538, now seen corresponding path program 1 times [2023-11-19 07:54:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30769176] [2023-11-19 07:54:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:30,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:30,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30769176] [2023-11-19 07:54:30,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30769176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:30,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:30,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:30,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417838239] [2023-11-19 07:54:30,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:30,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:30,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:30,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:30,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:30,389 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:30,503 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2023-11-19 07:54:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 07:54:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:30,505 INFO L225 Difference]: With dead ends: 124 [2023-11-19 07:54:30,505 INFO L226 Difference]: Without dead ends: 124 [2023-11-19 07:54:30,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:30,506 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 117 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:30,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 104 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-19 07:54:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2023-11-19 07:54:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 121 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2023-11-19 07:54:30,511 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 23 [2023-11-19 07:54:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:30,511 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2023-11-19 07:54:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2023-11-19 07:54:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:54:30,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:30,512 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] [2023-11-19 07:54:30,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:54:30,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:30,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1066726440, now seen corresponding path program 1 times [2023-11-19 07:54:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473583631] [2023-11-19 07:54:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:30,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473583631] [2023-11-19 07:54:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473583631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:30,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:54:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875269082] [2023-11-19 07:54:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:30,784 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-11-19 07:54:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:31,033 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2023-11-19 07:54:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:31,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 [2023-11-19 07:54:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:31,035 INFO L225 Difference]: With dead ends: 135 [2023-11-19 07:54:31,035 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 07:54:31,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:54:31,036 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 114 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:31,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 288 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-19 07:54:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2023-11-19 07:54:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 119 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2023-11-19 07:54:31,042 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 23 [2023-11-19 07:54:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:31,042 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2023-11-19 07:54:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-11-19 07:54:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2023-11-19 07:54:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:54:31,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:31,044 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] [2023-11-19 07:54:31,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:54:31,044 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:31,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1068143498, now seen corresponding path program 1 times [2023-11-19 07:54:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846286970] [2023-11-19 07:54:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846286970] [2023-11-19 07:54:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846286970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:54:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560076243] [2023-11-19 07:54:31,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:31,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:31,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:31,340 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-11-19 07:54:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:31,562 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2023-11-19 07:54:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:54:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 [2023-11-19 07:54:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:31,564 INFO L225 Difference]: With dead ends: 151 [2023-11-19 07:54:31,564 INFO L226 Difference]: Without dead ends: 151 [2023-11-19 07:54:31,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:54:31,565 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 202 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:31,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 233 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-19 07:54:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2023-11-19 07:54:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 120 states have internal predecessors, (143), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2023-11-19 07:54:31,569 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 23 [2023-11-19 07:54:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:31,570 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2023-11-19 07:54:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-11-19 07:54:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2023-11-19 07:54:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:54:31,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:31,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:31,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:54:31,571 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:31,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1015078286, now seen corresponding path program 1 times [2023-11-19 07:54:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994209064] [2023-11-19 07:54:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994209064] [2023-11-19 07:54:31,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994209064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:31,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:31,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:31,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139039448] [2023-11-19 07:54:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:31,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:31,645 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-11-19 07:54:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:31,828 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2023-11-19 07:54:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2023-11-19 07:54:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:31,830 INFO L225 Difference]: With dead ends: 125 [2023-11-19 07:54:31,830 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 07:54:31,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:31,831 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:31,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 167 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 07:54:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-11-19 07:54:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 121 states have internal predecessors, (144), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2023-11-19 07:54:31,835 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 24 [2023-11-19 07:54:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:31,835 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2023-11-19 07:54:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-11-19 07:54:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2023-11-19 07:54:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:54:31,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:31,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:31,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:54:31,836 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:31,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1015078287, now seen corresponding path program 1 times [2023-11-19 07:54:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871549799] [2023-11-19 07:54:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871549799] [2023-11-19 07:54:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871549799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741781840] [2023-11-19 07:54:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:32,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:32,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:32,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:32,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:54:32,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:32,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:54:32,627 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 [2023-11-19 07:54:32,637 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 [2023-11-19 07:54:32,673 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 19 treesize of output 18 [2023-11-19 07:54:32,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-19 07:54:32,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:54:32,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:54:32,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:32,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-11-19 07:54:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:32,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:32,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-11-19 07:54:33,608 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:33,618 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 07:54:33,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 23 [2023-11-19 07:54:33,640 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-11-19 07:54:33,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 16 [2023-11-19 07:54:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:33,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:34,158 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_642 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse3 v_ArrVal_642)))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_641)) (.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse0 (select (select .cse4 .cse2) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (< (+ 11 .cse0) (select |c_#length| (select (select .cse1 .cse2) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (not (= v_ArrVal_641 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse3 (select v_ArrVal_641 .cse3)))) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (< (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< (+ 8 .cse0) 0))))))) is different from false [2023-11-19 07:54:34,249 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_642 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_46| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse0 (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_46|))) (let ((.cse2 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse0 v_ArrVal_642))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_641) .cse3) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (not (= (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse0 (select v_ArrVal_641 .cse0)) v_ArrVal_641)) (< (select v_ArrVal_641 |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< (+ .cse1 8) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (< (+ .cse1 11) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| .cse2) .cse3) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_46| |c_ULTIMATE.start_main_~head~0#1.offset|))))))) is different from false [2023-11-19 07:54:34,365 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) (.cse6 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (forall ((v_ArrVal_642 Int) (v_ArrVal_640 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_46| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse3 (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_46|))) (let ((.cse4 (store (store .cse6 .cse2 v_ArrVal_640) .cse3 v_ArrVal_642))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_641) .cse5) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (= |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_46|) (< (+ .cse0 8) 0) (not (= (store (store .cse1 .cse2 (select v_ArrVal_641 .cse2)) .cse3 (select v_ArrVal_641 .cse3)) v_ArrVal_641)) (< (select v_ArrVal_641 |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (< (+ .cse0 11) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| .cse4) .cse5) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_46| |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (forall ((v_ArrVal_642 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse7 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_641) .cse8) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (< (+ .cse7 8) 0) (< (select v_ArrVal_641 |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< (+ .cse7 11) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse6 .cse2 v_ArrVal_642)) .cse8) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (not (= v_ArrVal_641 (store .cse1 .cse2 (select v_ArrVal_641 .cse2)))))))))) is different from false [2023-11-19 07:54:34,476 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse4 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse10 0)) (.cse1 (store .cse5 .cse10 0)) (.cse2 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (and (forall ((v_ArrVal_642 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse3 (select .cse5 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_641) .cse3) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (< (+ .cse0 8) 0) (< (select v_ArrVal_641 |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (< (+ .cse0 11) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse1 .cse2 v_ArrVal_642)) .cse3) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (not (= v_ArrVal_641 (store .cse4 .cse2 (select v_ArrVal_641 .cse2)))))))) (forall ((v_ArrVal_642 Int) (v_ArrVal_640 Int) (v_ArrVal_641 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_46| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_45| Int)) (let ((.cse6 (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_46|))) (let ((.cse8 (store (store .cse1 .cse2 v_ArrVal_640) .cse6 v_ArrVal_642))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse7 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_641) .cse9) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (or (= |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_46|) (not (= v_ArrVal_641 (store (store .cse4 .cse2 (select v_ArrVal_641 .cse2)) .cse6 (select v_ArrVal_641 .cse6)))) (< (select v_ArrVal_641 |c_ULTIMATE.start_main_~head~0#1.offset|) |v_ULTIMATE.start_main_~x~0#1.offset_45|) (< (+ 11 .cse7) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| .cse8) .cse9) |v_ULTIMATE.start_main_~x~0#1.offset_45|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_45| 0) (< (+ 8 .cse7) 0) (< |v_ULTIMATE.start_main_~x~0#1.offset_46| |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))) is different from false [2023-11-19 07:54:34,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:34,549 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 13312 treesize of output 12385 [2023-11-19 07:54:34,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:34,722 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 2490 treesize of output 2053 [2023-11-19 07:54:43,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:43,710 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:43,713 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 77 treesize of output 73 [2023-11-19 07:54:43,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:43,914 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:43,917 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 77 treesize of output 73 [2023-11-19 07:54:44,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,054 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 3201 treesize of output 3181 [2023-11-19 07:54:44,331 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,338 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2023-11-19 07:54:44,380 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,385 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2023-11-19 07:54:44,433 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,436 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-19 07:54:44,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2023-11-19 07:54:44,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,508 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 2671 treesize of output 2653 [2023-11-19 07:54:44,701 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,702 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,702 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,703 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,704 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-11-19 07:54:44,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3850 treesize of output 3826 [2023-11-19 07:54:45,044 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,049 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 2671 treesize of output 2653 [2023-11-19 07:54:45,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,254 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 2552 treesize of output 2536 [2023-11-19 07:54:45,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 757 treesize of output 747 [2023-11-19 07:54:45,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,611 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 2022 treesize of output 2008 [2023-11-19 07:54:45,801 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:45,806 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 3201 treesize of output 3181 [2023-11-19 07:54:45,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 498 treesize of output 484 [2023-11-19 07:54:46,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,060 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 2671 treesize of output 2653 [2023-11-19 07:54:46,194 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,217 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 2022 treesize of output 2008 [2023-11-19 07:54:46,309 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,315 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 2552 treesize of output 2536 [2023-11-19 07:54:46,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 604 treesize of output 596 [2023-11-19 07:54:46,536 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,538 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-11-19 07:54:46,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,562 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 604 treesize of output 596 [2023-11-19 07:54:46,634 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 445 [2023-11-19 07:54:46,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,700 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 3320 treesize of output 3298 [2023-11-19 07:54:46,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,840 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 445 [2023-11-19 07:54:46,904 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:46,908 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 1373 treesize of output 1363 [2023-11-19 07:54:47,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,007 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 2022 treesize of output 2008 [2023-11-19 07:54:47,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-19 07:54:47,132 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 639 treesize of output 629 [2023-11-19 07:54:47,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,233 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 112 [2023-11-19 07:54:47,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,267 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,269 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 226 treesize of output 218 [2023-11-19 07:54:47,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,317 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 268 treesize of output 260 [2023-11-19 07:54:47,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,365 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 632 treesize of output 616 [2023-11-19 07:54:47,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2023-11-19 07:54:47,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,500 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 2552 treesize of output 2536 [2023-11-19 07:54:47,633 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,638 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 1903 treesize of output 1891 [2023-11-19 07:54:47,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,743 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 3201 treesize of output 3181 [2023-11-19 07:54:47,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2023-11-19 07:54:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:47,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 757 treesize of output 747 [2023-11-19 07:54:48,063 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:48,068 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:48,069 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:48,070 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,092 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,104 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,112 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,123 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,132 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-19 07:54:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:48,166 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2023-11-19 07:54:48,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 274 treesize of output 1 [2023-11-19 07:54:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:48,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741781840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:48,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:48,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 31 [2023-11-19 07:54:48,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66720385] [2023-11-19 07:54:48,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:48,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:54:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:54:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=651, Unknown=4, NotChecked=220, Total=992 [2023-11-19 07:54:48,215 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2023-11-19 07:54:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:50,245 INFO L93 Difference]: Finished difference Result 174 states and 192 transitions. [2023-11-19 07:54:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:54:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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 24 [2023-11-19 07:54:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:50,247 INFO L225 Difference]: With dead ends: 174 [2023-11-19 07:54:50,247 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:54:50,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=445, Invalid=1637, Unknown=4, NotChecked=364, Total=2450 [2023-11-19 07:54:50,249 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 577 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 711 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:50,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 575 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 926 Invalid, 0 Unknown, 711 Unchecked, 0.9s Time] [2023-11-19 07:54:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:54:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 137. [2023-11-19 07:54:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.38135593220339) internal successors, (163), 135 states have internal predecessors, (163), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 165 transitions. [2023-11-19 07:54:50,255 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 165 transitions. Word has length 24 [2023-11-19 07:54:50,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:50,255 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 165 transitions. [2023-11-19 07:54:50,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2023-11-19 07:54:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 165 transitions. [2023-11-19 07:54:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:54:50,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:50,257 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] [2023-11-19 07:54:50,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:54:50,458 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:50,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash -11274789, now seen corresponding path program 1 times [2023-11-19 07:54:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013203671] [2023-11-19 07:54:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:50,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013203671] [2023-11-19 07:54:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013203671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:50,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:50,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:54:50,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967559927] [2023-11-19 07:54:50,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:50,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:54:50,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:54:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:50,888 INFO L87 Difference]: Start difference. First operand 137 states and 165 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-11-19 07:54:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:51,217 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2023-11-19 07:54:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:54:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-19 07:54:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:51,219 INFO L225 Difference]: With dead ends: 151 [2023-11-19 07:54:51,219 INFO L226 Difference]: Without dead ends: 147 [2023-11-19 07:54:51,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:54:51,219 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 135 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:51,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 450 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-19 07:54:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2023-11-19 07:54:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 135 states have internal predecessors, (162), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 164 transitions. [2023-11-19 07:54:51,229 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 164 transitions. Word has length 25 [2023-11-19 07:54:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:51,230 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 164 transitions. [2023-11-19 07:54:51,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-11-19 07:54:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 164 transitions. [2023-11-19 07:54:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:54:51,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:51,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:51,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 07:54:51,231 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:51,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1064543596, now seen corresponding path program 1 times [2023-11-19 07:54:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211449018] [2023-11-19 07:54:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211449018] [2023-11-19 07:54:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211449018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:51,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:54:51,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981713477] [2023-11-19 07:54:51,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:54:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:51,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:54:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:54:51,825 INFO L87 Difference]: Start difference. First operand 137 states and 164 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:52,266 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2023-11-19 07:54:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:54:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:54:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:52,268 INFO L225 Difference]: With dead ends: 146 [2023-11-19 07:54:52,269 INFO L226 Difference]: Without dead ends: 146 [2023-11-19 07:54:52,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:54:52,270 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 178 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 451 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-19 07:54:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2023-11-19 07:54:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 117 states have (on average 1.3675213675213675) internal successors, (160), 134 states have internal predecessors, (160), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2023-11-19 07:54:52,278 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 27 [2023-11-19 07:54:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:52,278 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2023-11-19 07:54:52,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2023-11-19 07:54:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:54:52,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:52,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 07:54:52,280 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:52,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1274137331, now seen corresponding path program 1 times [2023-11-19 07:54:52,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:52,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743930877] [2023-11-19 07:54:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743930877] [2023-11-19 07:54:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743930877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897403510] [2023-11-19 07:54:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:52,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:52,325 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:52,340 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2023-11-19 07:54:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:54:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:52,342 INFO L225 Difference]: With dead ends: 204 [2023-11-19 07:54:52,342 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:54:52,343 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 [2023-11-19 07:54:52,343 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 57 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:52,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:54:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 152. [2023-11-19 07:54:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.3383458646616542) internal successors, (178), 150 states have internal predecessors, (178), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2023-11-19 07:54:52,351 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 27 [2023-11-19 07:54:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:52,351 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2023-11-19 07:54:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2023-11-19 07:54:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:54:52,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:52,352 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, 1] [2023-11-19 07:54:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 07:54:52,353 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:52,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -667416458, now seen corresponding path program 1 times [2023-11-19 07:54:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757016491] [2023-11-19 07:54:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:52,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:52,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757016491] [2023-11-19 07:54:52,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757016491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256701182] [2023-11-19 07:54:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:52,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:52,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:52,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:52,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:54:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:52,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 07:54:52,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:52,908 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 [2023-11-19 07:54:52,915 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 [2023-11-19 07:54:52,943 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 19 treesize of output 18 [2023-11-19 07:54:52,952 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 19 treesize of output 18 [2023-11-19 07:54:52,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:52,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:54:52,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 07:54:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:53,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-11-19 07:54:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:54:53,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-11-19 07:54:53,127 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 8 treesize of output 1 [2023-11-19 07:54:53,753 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:54:53,759 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 07:54:53,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 36 [2023-11-19 07:54:53,775 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-11-19 07:54:53,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 25 [2023-11-19 07:54:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:53,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256701182] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:54:54,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 15] total 29 [2023-11-19 07:54:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913214774] [2023-11-19 07:54:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:54:54,081 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-11-19 07:54:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:54,383 INFO L93 Difference]: Finished difference Result 176 states and 206 transitions. [2023-11-19 07:54:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:54,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 27 [2023-11-19 07:54:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:54,385 INFO L225 Difference]: With dead ends: 176 [2023-11-19 07:54:54,385 INFO L226 Difference]: Without dead ends: 176 [2023-11-19 07:54:54,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:54:54,386 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 37 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:54,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 308 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-19 07:54:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2023-11-19 07:54:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 150 states have (on average 1.3266666666666667) internal successors, (199), 167 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2023-11-19 07:54:54,390 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 27 [2023-11-19 07:54:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:54,391 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2023-11-19 07:54:54,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-11-19 07:54:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2023-11-19 07:54:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:54:54,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:54,392 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:54,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:54:54,605 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:54,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 762074956, now seen corresponding path program 1 times [2023-11-19 07:54:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513307501] [2023-11-19 07:54:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513307501] [2023-11-19 07:54:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513307501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166159213] [2023-11-19 07:54:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:55,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:55,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:55,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:54:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:54:55,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:55,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:54:55,234 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:54:55,234 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 [2023-11-19 07:54:55,264 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 [2023-11-19 07:54:55,274 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 15 treesize of output 1 [2023-11-19 07:54:55,353 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:54:55,354 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 41 treesize of output 38 [2023-11-19 07:54:55,360 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 24 treesize of output 11 [2023-11-19 07:54:55,389 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 15 treesize of output 7 [2023-11-19 07:54:55,450 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 07:54:55,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-19 07:54:55,481 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 16 treesize of output 11 [2023-11-19 07:54:55,539 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:54:55,539 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 33 treesize of output 32 [2023-11-19 07:54:55,564 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 24 treesize of output 12 [2023-11-19 07:54:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:56,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,139 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 56 treesize of output 40 [2023-11-19 07:54:56,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,150 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 246 treesize of output 221 [2023-11-19 07:54:56,167 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 86 treesize of output 80 [2023-11-19 07:54:56,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,183 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 90 treesize of output 90 [2023-11-19 07:54:56,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,308 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 18 treesize of output 19 [2023-11-19 07:54:56,313 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 30 treesize of output 22 [2023-11-19 07:54:56,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-19 07:54:56,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,331 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 37 treesize of output 30 [2023-11-19 07:54:56,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 220 [2023-11-19 07:54:56,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,370 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 142 treesize of output 141 [2023-11-19 07:54:56,378 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 132 treesize of output 126 [2023-11-19 07:54:56,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:56,461 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 18 treesize of output 19 [2023-11-19 07:54:56,466 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 30 treesize of output 22 [2023-11-19 07:54:56,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 07:54:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166159213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:56,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:54:56,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 30 [2023-11-19 07:54:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209275109] [2023-11-19 07:54:56,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 07:54:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 07:54:56,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=744, Unknown=26, NotChecked=0, Total=870 [2023-11-19 07:54:56,751 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:58,052 INFO L93 Difference]: Finished difference Result 290 states and 335 transitions. [2023-11-19 07:54:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:54:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:54:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:58,056 INFO L225 Difference]: With dead ends: 290 [2023-11-19 07:54:58,056 INFO L226 Difference]: Without dead ends: 290 [2023-11-19 07:54:58,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=258, Invalid=1512, Unknown=36, NotChecked=0, Total=1806 [2023-11-19 07:54:58,057 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 433 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:58,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 726 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 938 Invalid, 2 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:54:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-19 07:54:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 194. [2023-11-19 07:54:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 175 states have (on average 1.2971428571428572) internal successors, (227), 192 states have internal predecessors, (227), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 229 transitions. [2023-11-19 07:54:58,064 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 229 transitions. Word has length 30 [2023-11-19 07:54:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:58,064 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 229 transitions. [2023-11-19 07:54:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 229 transitions. [2023-11-19 07:54:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:54:58,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:58,066 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:58,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:54:58,287 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-19 07:54:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2053626213, now seen corresponding path program 1 times [2023-11-19 07:54:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042540259] [2023-11-19 07:54:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042540259] [2023-11-19 07:54:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042540259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700164796] [2023-11-19 07:54:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:58,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:58,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:58,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f4c727-3742-416d-ad54-9467d0ce809c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:54:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:58,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:54:58,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:58,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:54:58,832 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-19 07:54:58,833 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 [2023-11-19 07:54:58,876 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 15 treesize of output 1 [2023-11-19 07:54:58,986 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:54:58,987 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 34 treesize of output 33 [2023-11-19 07:54:59,078 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 07:54:59,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 07:54:59,117 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 07:54:59,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 07:54:59,170 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:54:59,170 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 34 treesize of output 33 [2023-11-19 07:54:59,206 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 25 treesize of output 13 [2023-11-19 07:54:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:59,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:59,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:59,504 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 38 treesize of output 31 [2023-11-19 07:54:59,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:59,527 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 144 treesize of output 131 [2023-11-19 07:54:59,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:54:59,542 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 80 treesize of output 78 [2023-11-19 07:54:59,548 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 70 treesize of output 66