./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-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_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/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_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/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_c814c1ef-a214-45e9-a561-46be0aa4c15c/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 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:52,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:53,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:59:53,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:53,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:53,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:53,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:53,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:53,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:53,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:53,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:53,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:53,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:53,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:53,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:53,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:53,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:53,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:53,124 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:53,124 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:53,125 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:59:53,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:53,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:53,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:53,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:53,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:53,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:53,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:53,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:53,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:53,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:53,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:53,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:53,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:53,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:53,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:53,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:53,147 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:53,148 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_c814c1ef-a214-45e9-a561-46be0aa4c15c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2023-11-19 07:59:53,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:53,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:53,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:53,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:53,509 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:53,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2023-11-19 07:59:56,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:56,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:56,895 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2023-11-19 07:59:56,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/data/a3935ba1b/297dd0ed860a4200816dec65714d870c/FLAG9703b77d2 [2023-11-19 07:59:56,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/data/a3935ba1b/297dd0ed860a4200816dec65714d870c [2023-11-19 07:59:56,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:56,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:56,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:56,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:56,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:56,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:56" (1/1) ... [2023-11-19 07:59:56,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d63f70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:56, skipping insertion in model container [2023-11-19 07:59:56,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:56" (1/1) ... [2023-11-19 07:59:57,007 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:57,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:57,424 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:57,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:57,503 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:57,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57 WrapperNode [2023-11-19 07:59:57,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:57,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:57,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:57,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:57,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,559 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 199 [2023-11-19 07:59:57,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:57,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:57,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:57,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:57,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:57,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:57,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:57,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:57,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (1/1) ... [2023-11-19 07:59:57,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:57,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:57,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:59:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:59:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:59:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:59:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:57,854 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:57,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:58,411 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:58,421 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:58,421 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-19 07:59:58,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:58 BoogieIcfgContainer [2023-11-19 07:59:58,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:58,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:58,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:58,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:58,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:56" (1/3) ... [2023-11-19 07:59:58,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d0fd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:58, skipping insertion in model container [2023-11-19 07:59:58,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:57" (2/3) ... [2023-11-19 07:59:58,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d0fd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:58, skipping insertion in model container [2023-11-19 07:59:58,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:58" (3/3) ... [2023-11-19 07:59:58,437 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2023-11-19 07:59:58,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:58,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2023-11-19 07:59:58,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:58,516 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;@2945de22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:58,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-19 07:59:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 101 states have (on average 2.108910891089109) internal successors, (213), 176 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:59:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:59:58,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:58,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:59:58,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:59:58,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-19 07:59:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849692534] [2023-11-19 07:59:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,774 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 07:59:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:58,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849692534] [2023-11-19 07:59:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849692534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:58,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84559273] [2023-11-19 07:59:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:58,842 INFO L87 Difference]: Start difference. First operand has 184 states, 101 states have (on average 2.108910891089109) internal successors, (213), 176 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:59,095 INFO L93 Difference]: Finished difference Result 177 states and 194 transitions. [2023-11-19 07:59:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:59,097 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 07:59:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:59,111 INFO L225 Difference]: With dead ends: 177 [2023-11-19 07:59:59,111 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 07:59:59,113 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 07:59:59,120 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 164 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:59,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 07:59:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2023-11-19 07:59:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 93 states have (on average 1.946236559139785) internal successors, (181), 169 states have internal predecessors, (181), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2023-11-19 07:59:59,190 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 3 [2023-11-19 07:59:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:59,191 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2023-11-19 07:59:59,191 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 07:59:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2023-11-19 07:59:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:59:59,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:59,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:59:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:59,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:59:59,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-19 07:59:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:59,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981913255] [2023-11-19 07:59:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:59,351 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 07:59:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981913255] [2023-11-19 07:59:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981913255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937368064] [2023-11-19 07:59:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:59,355 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:59,549 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2023-11-19 07:59:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:59,550 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 07:59:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:59,552 INFO L225 Difference]: With dead ends: 172 [2023-11-19 07:59:59,552 INFO L226 Difference]: Without dead ends: 172 [2023-11-19 07:59:59,553 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 07:59:59,555 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:59,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 120 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-19 07:59:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2023-11-19 07:59:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.913978494623656) internal successors, (178), 166 states have internal predecessors, (178), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2023-11-19 07:59:59,568 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 3 [2023-11-19 07:59:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:59,568 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2023-11-19 07:59:59,569 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 07:59:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2023-11-19 07:59:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:59:59,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:59,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:59,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:59:59,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash 919164531, now seen corresponding path program 1 times [2023-11-19 07:59:59,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846639711] [2023-11-19 07:59:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:59,826 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 07:59:59,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846639711] [2023-11-19 07:59:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846639711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:59,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:59,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144486238] [2023-11-19 07:59:59,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:59,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:59,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:59,830 INFO L87 Difference]: Start difference. First operand 168 states and 184 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:00,085 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2023-11-19 08:00:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:00,086 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 08:00:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:00,089 INFO L225 Difference]: With dead ends: 175 [2023-11-19 08:00:00,089 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 08:00:00,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:00,098 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 286 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:00,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 95 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 08:00:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 164. [2023-11-19 08:00:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.7289719626168225) internal successors, (185), 162 states have internal predecessors, (185), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2023-11-19 08:00:00,121 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 9 [2023-11-19 08:00:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:00,123 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2023-11-19 08:00:00,123 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 08:00:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2023-11-19 08:00:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 08:00:00,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:00,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:00,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:00,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 919164532, now seen corresponding path program 1 times [2023-11-19 08:00:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:00,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153787202] [2023-11-19 08:00:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:00,343 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 08:00:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153787202] [2023-11-19 08:00:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153787202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314375885] [2023-11-19 08:00:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:00,346 INFO L87 Difference]: Start difference. First operand 164 states and 191 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:00,835 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2023-11-19 08:00:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 08:00:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:00,837 INFO L225 Difference]: With dead ends: 251 [2023-11-19 08:00:00,837 INFO L226 Difference]: Without dead ends: 251 [2023-11-19 08:00:00,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:00,839 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 564 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:00,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 180 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-19 08:00:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 217. [2023-11-19 08:00:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 160 states have (on average 1.625) internal successors, (260), 215 states have internal predecessors, (260), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 266 transitions. [2023-11-19 08:00:00,852 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 266 transitions. Word has length 9 [2023-11-19 08:00:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:00,853 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 266 transitions. [2023-11-19 08:00:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 266 transitions. [2023-11-19 08:00:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:00:00,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:00,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:00,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:00,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1801951228, now seen corresponding path program 1 times [2023-11-19 08:00:00,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:00,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136066547] [2023-11-19 08:00:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:00,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136066547] [2023-11-19 08:00:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136066547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:00,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:00,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867118558] [2023-11-19 08:00:00,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:00,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:00,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:00,900 INFO L87 Difference]: Start difference. First operand 217 states and 266 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:00,923 INFO L93 Difference]: Finished difference Result 263 states and 315 transitions. [2023-11-19 08:00:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 08:00:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:00,926 INFO L225 Difference]: With dead ends: 263 [2023-11-19 08:00:00,926 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 08:00:00,927 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 08:00:00,928 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 119 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:00,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 237 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 08:00:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 230. [2023-11-19 08:00:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 173 states have (on average 1.6184971098265897) internal successors, (280), 228 states have internal predecessors, (280), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 286 transitions. [2023-11-19 08:00:00,940 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 286 transitions. Word has length 13 [2023-11-19 08:00:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:00,941 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 286 transitions. [2023-11-19 08:00:00,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 286 transitions. [2023-11-19 08:00:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 08:00:00,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:00,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:00,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:00,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:00,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931275, now seen corresponding path program 1 times [2023-11-19 08:00:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704802479] [2023-11-19 08:00:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,077 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 08:00:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:01,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704802479] [2023-11-19 08:00:01,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704802479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:01,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:01,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047894593] [2023-11-19 08:00:01,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:01,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:01,081 INFO L87 Difference]: Start difference. First operand 230 states and 286 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,297 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2023-11-19 08:00:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:01,298 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 08:00:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,299 INFO L225 Difference]: With dead ends: 229 [2023-11-19 08:00:01,300 INFO L226 Difference]: Without dead ends: 229 [2023-11-19 08:00:01,300 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 08:00:01,301 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 10 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 434 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-19 08:00:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-19 08:00:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 227 states have internal predecessors, (277), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 283 transitions. [2023-11-19 08:00:01,309 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 283 transitions. Word has length 12 [2023-11-19 08:00:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:01,310 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 283 transitions. [2023-11-19 08:00:01,310 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 08:00:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 283 transitions. [2023-11-19 08:00:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 08:00:01,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:01,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:01,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:01,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931274, now seen corresponding path program 1 times [2023-11-19 08:00:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:01,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802695213] [2023-11-19 08:00:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,500 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 08:00:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802695213] [2023-11-19 08:00:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802695213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:01,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95508805] [2023-11-19 08:00:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:01,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:01,502 INFO L87 Difference]: Start difference. First operand 229 states and 283 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,839 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2023-11-19 08:00:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:01,840 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 08:00:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,841 INFO L225 Difference]: With dead ends: 228 [2023-11-19 08:00:01,841 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 08:00:01,841 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 08:00:01,842 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 5 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 414 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 08:00:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-11-19 08:00:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 173 states have (on average 1.583815028901734) internal successors, (274), 226 states have internal predecessors, (274), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 280 transitions. [2023-11-19 08:00:01,849 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 280 transitions. Word has length 12 [2023-11-19 08:00:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:01,849 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 280 transitions. [2023-11-19 08:00:01,849 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 08:00:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 280 transitions. [2023-11-19 08:00:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 08:00:01,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:01,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:01,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:01,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618057, now seen corresponding path program 1 times [2023-11-19 08:00:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339423423] [2023-11-19 08:00:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,142 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 08:00:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339423423] [2023-11-19 08:00:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339423423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:02,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:00:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671815495] [2023-11-19 08:00:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:02,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:00:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:00:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:02,145 INFO L87 Difference]: Start difference. First operand 228 states and 280 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:02,644 INFO L93 Difference]: Finished difference Result 234 states and 281 transitions. [2023-11-19 08:00:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:02,645 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 08:00:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:02,646 INFO L225 Difference]: With dead ends: 234 [2023-11-19 08:00:02,646 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 08:00:02,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:00:02,648 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 284 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:02,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 283 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 08:00:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 227. [2023-11-19 08:00:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.5722543352601157) internal successors, (272), 225 states have internal predecessors, (272), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 278 transitions. [2023-11-19 08:00:02,658 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 278 transitions. Word has length 16 [2023-11-19 08:00:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:02,659 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 278 transitions. [2023-11-19 08:00:02,660 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 08:00:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 278 transitions. [2023-11-19 08:00:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 08:00:02,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:02,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:00:02,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:02,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618056, now seen corresponding path program 1 times [2023-11-19 08:00:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:02,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147737846] [2023-11-19 08:00:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:03,067 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 08:00:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147737846] [2023-11-19 08:00:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147737846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:00:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727728861] [2023-11-19 08:00:03,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:00:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:00:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:03,072 INFO L87 Difference]: Start difference. First operand 227 states and 278 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,003 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2023-11-19 08:00:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:00:04,004 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 08:00:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,005 INFO L225 Difference]: With dead ends: 229 [2023-11-19 08:00:04,006 INFO L226 Difference]: Without dead ends: 229 [2023-11-19 08:00:04,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:00:04,007 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 281 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 463 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:00:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-19 08:00:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 213. [2023-11-19 08:00:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 165 states have (on average 1.5393939393939393) internal successors, (254), 211 states have internal predecessors, (254), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 260 transitions. [2023-11-19 08:00:04,014 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 260 transitions. Word has length 16 [2023-11-19 08:00:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,014 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 260 transitions. [2023-11-19 08:00:04,014 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 08:00:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 260 transitions. [2023-11-19 08:00:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 08:00:04,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,016 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:00:04,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:04,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1826649493, now seen corresponding path program 1 times [2023-11-19 08:00:04,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638774949] [2023-11-19 08:00:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:04,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:04,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638774949] [2023-11-19 08:00:04,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638774949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:04,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:04,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:04,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045438891] [2023-11-19 08:00:04,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:04,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:04,086 INFO L87 Difference]: Start difference. First operand 213 states and 260 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,250 INFO L93 Difference]: Finished difference Result 247 states and 278 transitions. [2023-11-19 08:00:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 08:00:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,253 INFO L225 Difference]: With dead ends: 247 [2023-11-19 08:00:04,253 INFO L226 Difference]: Without dead ends: 247 [2023-11-19 08:00:04,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:04,254 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 284 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 213 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-19 08:00:04,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 212. [2023-11-19 08:00:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 165 states have (on average 1.5212121212121212) internal successors, (251), 210 states have internal predecessors, (251), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 256 transitions. [2023-11-19 08:00:04,261 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 256 transitions. Word has length 27 [2023-11-19 08:00:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,261 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 256 transitions. [2023-11-19 08:00:04,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 256 transitions. [2023-11-19 08:00:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:00:04,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:00:04,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:04,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash 477037051, now seen corresponding path program 1 times [2023-11-19 08:00:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352697703] [2023-11-19 08:00:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,822 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 08:00:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352697703] [2023-11-19 08:00:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352697703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:04,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390460293] [2023-11-19 08:00:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:04,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:04,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 08:00:04,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:05,044 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 08:00:05,168 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-19 08:00:05,168 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 08:00:05,238 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 08:00:05,388 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:05,388 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 08:00:05,537 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:00:05,538 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 08:00:05,618 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:05,618 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 08:00:05,799 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 08:00:05,857 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 08:00:05,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:06,382 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_72| Int) (v_ArrVal_334 (Array Int Int))) (or (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_334))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_72|)) 1) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_72|) (< |v_ULTIMATE.start_main_~x~0#1.offset_72| 0))) is different from false [2023-11-19 08:00:06,401 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_72| Int) (v_ArrVal_334 (Array Int Int))) (or (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_334))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_72|)) 1) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_72|) (< |v_ULTIMATE.start_main_~x~0#1.offset_72| 0))) is different from false [2023-11-19 08:00:06,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:06,438 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 08:00:06,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:06,461 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 08:00:06,481 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 80 treesize of output 76 [2023-11-19 08:00:06,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:06,505 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 76 treesize of output 74 [2023-11-19 08:00:08,708 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 08:00:08,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390460293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:08,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2023-11-19 08:00:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322476110] [2023-11-19 08:00:08,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-19 08:00:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-19 08:00:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=838, Unknown=10, NotChecked=122, Total=1122 [2023-11-19 08:00:08,712 INFO L87 Difference]: Start difference. First operand 212 states and 256 transitions. Second operand has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 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 08:00:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:11,112 INFO L93 Difference]: Finished difference Result 418 states and 486 transitions. [2023-11-19 08:00:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:00:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 08:00:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:11,115 INFO L225 Difference]: With dead ends: 418 [2023-11-19 08:00:11,115 INFO L226 Difference]: Without dead ends: 418 [2023-11-19 08:00:11,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=394, Invalid=1766, Unknown=10, NotChecked=182, Total=2352 [2023-11-19 08:00:11,117 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1466 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 893 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:11,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1217 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1702 Invalid, 0 Unknown, 893 Unchecked, 1.7s Time] [2023-11-19 08:00:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-19 08:00:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 237. [2023-11-19 08:00:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 235 states have internal predecessors, (281), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 286 transitions. [2023-11-19 08:00:11,128 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 286 transitions. Word has length 31 [2023-11-19 08:00:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,130 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 286 transitions. [2023-11-19 08:00:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 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 08:00:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 286 transitions. [2023-11-19 08:00:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:00:11,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:11,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:00:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:00:11,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 477037052, now seen corresponding path program 1 times [2023-11-19 08:00:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576359499] [2023-11-19 08:00:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,213 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 08:00:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:12,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576359499] [2023-11-19 08:00:12,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576359499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:12,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468469633] [2023-11-19 08:00:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:12,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:12,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:12,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:12,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 08:00:12,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:12,380 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 08:00:12,462 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 08:00:12,480 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 08:00:12,481 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 08:00:12,526 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 08:00:12,540 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 08:00:12,687 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:12,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-19 08:00:12,693 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 08:00:12,858 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 08:00:12,858 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 16 treesize of output 15 [2023-11-19 08:00:12,880 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:00:12,881 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 08:00:12,981 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:12,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-19 08:00:12,989 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 08:00:13,200 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 08:00:13,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 08:00:13,237 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 08:00:13,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:13,620 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 11) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (forall ((v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< 0 (+ 9 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|)))) is different from false [2023-11-19 08:00:13,879 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< (+ 11 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_438) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (forall ((v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< 0 (+ 9 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))))) is different from false [2023-11-19 08:00:13,940 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_434 (Array Int Int)) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_434) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_433) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 9)))) (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_434 (Array Int Int)) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_433))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (< (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_434) .cse0 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 11) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_438) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|)))))))) is different from false [2023-11-19 08:00:13,974 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_434 (Array Int Int)) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_433))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (< (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_434) .cse1 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 11) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_438) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|))) (forall ((v_ArrVal_437 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_434 (Array Int Int)) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_434) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_433) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 9)))))) is different from false [2023-11-19 08:00:14,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,022 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 73 treesize of output 74 [2023-11-19 08:00:14,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,031 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 65 treesize of output 50 [2023-11-19 08:00:14,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,048 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 632 treesize of output 567 [2023-11-19 08:00:14,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,107 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 1127 treesize of output 1070 [2023-11-19 08:00:14,184 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 547 treesize of output 523 [2023-11-19 08:00:14,206 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 523 treesize of output 499 [2023-11-19 08:00:14,243 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 499 treesize of output 491 [2023-11-19 08:00:14,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,272 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 491 treesize of output 447 [2023-11-19 08:00:14,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,761 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 39 [2023-11-19 08:00:14,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:14,770 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 30 treesize of output 31 [2023-11-19 08:00:14,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 08:00:14,777 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 28 treesize of output 20 [2023-11-19 08:00:14,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 08:00:14,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:14,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:14,785 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-19 08:00:15,077 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 08:00:15,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468469633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:15,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:15,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2023-11-19 08:00:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310868408] [2023-11-19 08:00:15,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:15,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 08:00:15,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 08:00:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=877, Unknown=11, NotChecked=252, Total=1260 [2023-11-19 08:00:15,081 INFO L87 Difference]: Start difference. First operand 237 states and 286 transitions. Second operand has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:17,965 INFO L93 Difference]: Finished difference Result 409 states and 477 transitions. [2023-11-19 08:00:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:00:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 08:00:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:17,969 INFO L225 Difference]: With dead ends: 409 [2023-11-19 08:00:17,969 INFO L226 Difference]: Without dead ends: 409 [2023-11-19 08:00:17,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=413, Invalid=2042, Unknown=11, NotChecked=396, Total=2862 [2023-11-19 08:00:17,972 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 923 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 3730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1722 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:17,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1266 Invalid, 3730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1919 Invalid, 0 Unknown, 1722 Unchecked, 1.8s Time] [2023-11-19 08:00:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-19 08:00:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 237. [2023-11-19 08:00:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 235 states have internal predecessors, (280), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2023-11-19 08:00:17,980 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 31 [2023-11-19 08:00:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:17,981 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2023-11-19 08:00:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2023-11-19 08:00:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 08:00:17,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:17,986 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:00:18,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:18,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1120151479, now seen corresponding path program 1 times [2023-11-19 08:00:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633815077] [2023-11-19 08:00:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633815077] [2023-11-19 08:00:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633815077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739419058] [2023-11-19 08:00:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,258 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,268 INFO L93 Difference]: Finished difference Result 239 states and 287 transitions. [2023-11-19 08:00:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:18,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-19 08:00:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,271 INFO L225 Difference]: With dead ends: 239 [2023-11-19 08:00:18,271 INFO L226 Difference]: Without dead ends: 239 [2023-11-19 08:00:18,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,272 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-19 08:00:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-19 08:00:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 192 states have (on average 1.46875) internal successors, (282), 237 states have internal predecessors, (282), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 287 transitions. [2023-11-19 08:00:18,279 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 287 transitions. Word has length 33 [2023-11-19 08:00:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,279 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 287 transitions. [2023-11-19 08:00:18,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 287 transitions. [2023-11-19 08:00:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,280 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:00:18,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:18,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1231280740, now seen corresponding path program 1 times [2023-11-19 08:00:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103305563] [2023-11-19 08:00:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103305563] [2023-11-19 08:00:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103305563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784184098] [2023-11-19 08:00:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:18,421 INFO L87 Difference]: Start difference. First operand 239 states and 287 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,801 INFO L93 Difference]: Finished difference Result 264 states and 317 transitions. [2023-11-19 08:00:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:18,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 08:00:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,803 INFO L225 Difference]: With dead ends: 264 [2023-11-19 08:00:18,804 INFO L226 Difference]: Without dead ends: 264 [2023-11-19 08:00:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:18,805 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 116 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 362 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-19 08:00:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 238. [2023-11-19 08:00:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 192 states have (on average 1.4635416666666667) internal successors, (281), 236 states have internal predecessors, (281), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2023-11-19 08:00:18,813 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 36 [2023-11-19 08:00:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,814 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2023-11-19 08:00:18,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2023-11-19 08:00:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:18,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,816 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:00:18,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:18,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1231280739, now seen corresponding path program 1 times [2023-11-19 08:00:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395447318] [2023-11-19 08:00:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395447318] [2023-11-19 08:00:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395447318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123640267] [2023-11-19 08:00:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:19,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:19,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:19,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:19,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-19 08:00:19,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:19,728 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 08:00:19,856 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 08:00:19,856 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 08:00:19,917 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 08:00:19,921 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 08:00:20,065 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:20,065 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 08:00:20,073 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 08:00:20,106 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 16 treesize of output 8 [2023-11-19 08:00:20,189 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 08:00:20,218 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 08:00:20,465 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 23 treesize of output 15 [2023-11-19 08:00:20,468 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 26 treesize of output 14 [2023-11-19 08:00:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:20,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:20,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:20,615 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 31 treesize of output 35 [2023-11-19 08:00:21,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:21,377 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 39 [2023-11-19 08:00:21,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:21,385 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 30 treesize of output 31 [2023-11-19 08:00:21,390 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 54 treesize of output 46 [2023-11-19 08:00:21,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:21,403 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 100 treesize of output 99 [2023-11-19 08:00:21,412 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 60 treesize of output 52 [2023-11-19 08:00:21,419 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 52 treesize of output 50 [2023-11-19 08:00:21,426 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 74 treesize of output 68 [2023-11-19 08:00:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:21,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123640267] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:21,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:21,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 42 [2023-11-19 08:00:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221651897] [2023-11-19 08:00:21,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-19 08:00:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-19 08:00:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1615, Unknown=30, NotChecked=0, Total=1806 [2023-11-19 08:00:21,821 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:26,430 INFO L93 Difference]: Finished difference Result 542 states and 632 transitions. [2023-11-19 08:00:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-19 08:00:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 08:00:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:26,434 INFO L225 Difference]: With dead ends: 542 [2023-11-19 08:00:26,434 INFO L226 Difference]: Without dead ends: 542 [2023-11-19 08:00:26,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1685, Invalid=8789, Unknown=32, NotChecked=0, Total=10506 [2023-11-19 08:00:26,440 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 1997 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:26,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 1828 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 08:00:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-11-19 08:00:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 263. [2023-11-19 08:00:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 224 states have (on average 1.3794642857142858) internal successors, (309), 261 states have internal predecessors, (309), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 314 transitions. [2023-11-19 08:00:26,451 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 314 transitions. Word has length 36 [2023-11-19 08:00:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:26,451 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 314 transitions. [2023-11-19 08:00:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 314 transitions. [2023-11-19 08:00:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:26,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:26,452 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:26,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:26,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:00:26,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:26,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash -15059330, now seen corresponding path program 1 times [2023-11-19 08:00:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797654309] [2023-11-19 08:00:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797654309] [2023-11-19 08:00:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797654309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:26,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:26,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841593416] [2023-11-19 08:00:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:26,872 INFO L87 Difference]: Start difference. First operand 263 states and 314 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:27,135 INFO L93 Difference]: Finished difference Result 279 states and 332 transitions. [2023-11-19 08:00:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:00:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 08:00:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:27,138 INFO L225 Difference]: With dead ends: 279 [2023-11-19 08:00:27,138 INFO L226 Difference]: Without dead ends: 279 [2023-11-19 08:00:27,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:27,139 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 31 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:27,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 613 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-19 08:00:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 271. [2023-11-19 08:00:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 269 states have internal predecessors, (317), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2023-11-19 08:00:27,147 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 36 [2023-11-19 08:00:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:27,147 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2023-11-19 08:00:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2023-11-19 08:00:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:27,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:27,148 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:00:27,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:27,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -14999748, now seen corresponding path program 1 times [2023-11-19 08:00:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784523368] [2023-11-19 08:00:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784523368] [2023-11-19 08:00:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784523368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:27,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:27,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835074042] [2023-11-19 08:00:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:27,236 INFO L87 Difference]: Start difference. First operand 271 states and 322 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:27,313 INFO L93 Difference]: Finished difference Result 268 states and 315 transitions. [2023-11-19 08:00:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 08:00:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:27,316 INFO L225 Difference]: With dead ends: 268 [2023-11-19 08:00:27,316 INFO L226 Difference]: Without dead ends: 268 [2023-11-19 08:00:27,316 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 08:00:27,317 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:27,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 163 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-19 08:00:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-11-19 08:00:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 232 states have (on average 1.3362068965517242) internal successors, (310), 265 states have internal predecessors, (310), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 315 transitions. [2023-11-19 08:00:27,325 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 315 transitions. Word has length 36 [2023-11-19 08:00:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:27,325 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 315 transitions. [2023-11-19 08:00:27,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 315 transitions. [2023-11-19 08:00:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:27,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:27,326 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:00:27,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash -14999747, now seen corresponding path program 1 times [2023-11-19 08:00:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054530804] [2023-11-19 08:00:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054530804] [2023-11-19 08:00:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054530804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:27,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133484639] [2023-11-19 08:00:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:27,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:27,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:27,437 INFO L87 Difference]: Start difference. First operand 267 states and 315 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:27,515 INFO L93 Difference]: Finished difference Result 263 states and 308 transitions. [2023-11-19 08:00:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 08:00:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:27,518 INFO L225 Difference]: With dead ends: 263 [2023-11-19 08:00:27,518 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 08:00:27,518 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 08:00:27,519 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 74 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:27,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 08:00:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-11-19 08:00:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 232 states have (on average 1.3060344827586208) internal successors, (303), 261 states have internal predecessors, (303), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 308 transitions. [2023-11-19 08:00:27,526 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 308 transitions. Word has length 36 [2023-11-19 08:00:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:27,526 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 308 transitions. [2023-11-19 08:00:27,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 308 transitions. [2023-11-19 08:00:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:00:27,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:27,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:00:27,528 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:27,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1865449993, now seen corresponding path program 1 times [2023-11-19 08:00:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:27,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002863828] [2023-11-19 08:00:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:27,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:27,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002863828] [2023-11-19 08:00:27,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002863828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:27,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:27,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041394341] [2023-11-19 08:00:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:27,656 INFO L87 Difference]: Start difference. First operand 263 states and 308 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:27,931 INFO L93 Difference]: Finished difference Result 283 states and 329 transitions. [2023-11-19 08:00:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-19 08:00:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:27,933 INFO L225 Difference]: With dead ends: 283 [2023-11-19 08:00:27,933 INFO L226 Difference]: Without dead ends: 283 [2023-11-19 08:00:27,934 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 08:00:27,934 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 96 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:27,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 334 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-19 08:00:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2023-11-19 08:00:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 238 states have (on average 1.3109243697478992) internal successors, (312), 267 states have internal predecessors, (312), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 317 transitions. [2023-11-19 08:00:27,941 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 317 transitions. Word has length 40 [2023-11-19 08:00:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:27,943 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 317 transitions. [2023-11-19 08:00:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 317 transitions. [2023-11-19 08:00:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:00:27,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:27,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:27,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 08:00:27,945 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:27,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1865449994, now seen corresponding path program 1 times [2023-11-19 08:00:27,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:27,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294939616] [2023-11-19 08:00:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:28,594 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 08:00:28,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294939616] [2023-11-19 08:00:28,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294939616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918187228] [2023-11-19 08:00:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:28,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:28,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:28,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:28,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:00:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:28,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:00:28,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:28,837 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 23 treesize of output 15 [2023-11-19 08:00:28,840 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 28 treesize of output 16 [2023-11-19 08:00:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:28,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918187228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:28,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:28,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-11-19 08:00:28,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536417938] [2023-11-19 08:00:28,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:00:28,890 INFO L87 Difference]: Start difference. First operand 269 states and 317 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:29,215 INFO L93 Difference]: Finished difference Result 278 states and 324 transitions. [2023-11-19 08:00:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:29,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-19 08:00:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:29,217 INFO L225 Difference]: With dead ends: 278 [2023-11-19 08:00:29,217 INFO L226 Difference]: Without dead ends: 278 [2023-11-19 08:00:29,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:00:29,218 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:29,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 412 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-19 08:00:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 267. [2023-11-19 08:00:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 265 states have internal predecessors, (307), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 312 transitions. [2023-11-19 08:00:29,227 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 312 transitions. Word has length 40 [2023-11-19 08:00:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:29,228 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 312 transitions. [2023-11-19 08:00:29,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 312 transitions. [2023-11-19 08:00:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:00:29,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:29,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:29,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:29,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:29,446 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 08:00:29,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 448294050, now seen corresponding path program 1 times [2023-11-19 08:00:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573756734] [2023-11-19 08:00:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:30,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:30,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573756734] [2023-11-19 08:00:30,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573756734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:30,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438773576] [2023-11-19 08:00:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:30,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:30,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:30,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c814c1ef-a214-45e9-a561-46be0aa4c15c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:00:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:30,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-19 08:00:30,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:30,437 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 08:00:30,534 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 08:00:30,534 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 08:00:30,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-19 08:00:30,594 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 08:00:30,605 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 08:00:30,766 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:00:30,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-19 08:00:30,776 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 08:00:30,918 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 08:00:30,918 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 19 treesize of output 18 [2023-11-19 08:00:30,936 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 08:00:30,936 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 36 treesize of output 27 [2023-11-19 08:00:31,073 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 08:00:31,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 63 [2023-11-19 08:00:31,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2023-11-19 08:00:31,428 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 9 treesize of output 3 [2023-11-19 08:00:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:31,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:38,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:38,220 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 626 treesize of output 482 [2023-11-19 08:00:38,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:38,238 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 464 treesize of output 328 [2023-11-19 08:00:39,283 INFO L349 Elim1Store]: treesize reduction 182, result has 64.5 percent of original size [2023-11-19 08:00:39,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 15386 treesize of output 14348 [2023-11-19 08:00:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:40,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:40,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49648 treesize of output 44892 [2023-11-19 08:00:40,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:40,936 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 7774 treesize of output 7048 [2023-11-19 08:00:42,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:42,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 10775 treesize of output 10307