./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:09:28,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:09:28,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:09:28,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:09:28,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:09:28,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:09:28,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:09:28,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:09:28,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:09:28,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:09:28,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:09:28,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:09:28,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:09:28,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:09:28,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:09:28,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:09:28,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:09:28,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:09:28,459 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:09:28,460 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:09:28,460 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:09:28,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:09:28,472 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:09:28,473 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:09:28,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:09:28,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:09:28,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:09:28,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:09:28,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:09:28,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:28,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:09:28,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:09:28,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:09:28,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:09:28,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:09:28,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:09:28,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:09:28,479 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:09:28,480 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_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2023-11-06 23:09:28,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:09:28,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:09:28,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:09:28,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:09:28,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:09:28,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2023-11-06 23:09:31,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:09:32,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:09:32,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2023-11-06 23:09:32,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/data/b89c6e8d7/66f8ea17d03443a9aa3999ec87b97470/FLAG470232e5c [2023-11-06 23:09:32,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/data/b89c6e8d7/66f8ea17d03443a9aa3999ec87b97470 [2023-11-06 23:09:32,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:09:32,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:09:32,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:32,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:09:32,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:09:32,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2013808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32, skipping insertion in model container [2023-11-06 23:09:32,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:09:32,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:32,545 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:09:32,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:32,583 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:09:32,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32 WrapperNode [2023-11-06 23:09:32,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:32,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:32,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:09:32,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:09:32,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,626 INFO L138 Inliner]: procedures = 13, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2023-11-06 23:09:32,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:32,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:09:32,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:09:32,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:09:32,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:09:32,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:09:32,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:09:32,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:09:32,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (1/1) ... [2023-11-06 23:09:32,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:32,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:09:32,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:09:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:09:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:09:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:09:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:09:32,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:09:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:09:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:09:32,845 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:09:32,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:09:33,145 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:33,152 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:33,152 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 23:09:33,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:33 BoogieIcfgContainer [2023-11-06 23:09:33,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:33,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:33,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:33,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:33,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:32" (1/3) ... [2023-11-06 23:09:33,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ab893d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:33, skipping insertion in model container [2023-11-06 23:09:33,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:32" (2/3) ... [2023-11-06 23:09:33,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ab893d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:33, skipping insertion in model container [2023-11-06 23:09:33,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:33" (3/3) ... [2023-11-06 23:09:33,167 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2023-11-06 23:09:33,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:33,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-06 23:09:33,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:33,260 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;@7b5e26f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:33,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 23:09:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 23:09:33,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:33,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 23:09:33,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:33,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-11-06 23:09:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993177956] [2023-11-06 23:09:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993177956] [2023-11-06 23:09:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993177956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:33,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:33,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:09:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869262512] [2023-11-06 23:09:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:33,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:33,731 INFO L87 Difference]: Start difference. First operand has 53 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:33,832 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2023-11-06 23:09:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-06 23:09:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:33,844 INFO L225 Difference]: With dead ends: 52 [2023-11-06 23:09:33,845 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 23:09:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:33,850 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:33,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 23:09:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 23:09:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.588235294117647) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-11-06 23:09:33,890 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 4 [2023-11-06 23:09:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:33,891 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-11-06 23:09:33,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-11-06 23:09:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 23:09:33,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:33,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 23:09:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:09:33,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:33,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-11-06 23:09:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684742221] [2023-11-06 23:09:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:33,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684742221] [2023-11-06 23:09:34,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684742221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:34,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:34,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271696971] [2023-11-06 23:09:34,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:34,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:34,040 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:34,113 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-11-06 23:09:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:34,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-06 23:09:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:34,115 INFO L225 Difference]: With dead ends: 53 [2023-11-06 23:09:34,116 INFO L226 Difference]: Without dead ends: 53 [2023-11-06 23:09:34,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:34,118 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 53 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:34,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 64 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-06 23:09:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-11-06 23:09:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-11-06 23:09:34,127 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 4 [2023-11-06 23:09:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:34,128 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-11-06 23:09:34,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-11-06 23:09:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 23:09:34,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:34,129 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 23:09:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:09:34,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:34,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2023-11-06 23:09:34,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:34,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222191495] [2023-11-06 23:09:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222191495] [2023-11-06 23:09:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222191495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733657962] [2023-11-06 23:09:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:34,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:34,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:09:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:34,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:09:34,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:34,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733657962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:34,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-06 23:09:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593216184] [2023-11-06 23:09:34,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:09:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:09:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:09:34,827 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:35,067 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2023-11-06 23:09:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 23:09:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:35,069 INFO L225 Difference]: With dead ends: 59 [2023-11-06 23:09:35,069 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 23:09:35,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:09:35,071 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 166 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:35,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 153 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 23:09:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-06 23:09:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2023-11-06 23:09:35,078 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 7 [2023-11-06 23:09:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:35,079 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2023-11-06 23:09:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2023-11-06 23:09:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 23:09:35,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:35,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:35,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:35,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:35,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2023-11-06 23:09:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062613528] [2023-11-06 23:09:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062613528] [2023-11-06 23:09:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062613528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592073920] [2023-11-06 23:09:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:35,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:35,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:09:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:35,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:09:35,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:35,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592073920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:35,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-06 23:09:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849244278] [2023-11-06 23:09:35,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:35,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:09:35,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:35,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:09:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:35,713 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:35,795 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2023-11-06 23:09:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 19 [2023-11-06 23:09:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:35,800 INFO L225 Difference]: With dead ends: 77 [2023-11-06 23:09:35,800 INFO L226 Difference]: Without dead ends: 77 [2023-11-06 23:09:35,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:35,802 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:35,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 280 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-06 23:09:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-06 23:09:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-11-06 23:09:35,814 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 19 [2023-11-06 23:09:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:35,814 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-11-06 23:09:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-11-06 23:09:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 23:09:35,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:35,818 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:35,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:36,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:36,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:36,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069290, now seen corresponding path program 2 times [2023-11-06 23:09:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316750747] [2023-11-06 23:09:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:36,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316750747] [2023-11-06 23:09:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316750747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:36,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:36,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528757147] [2023-11-06 23:09:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:36,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:36,343 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:36,467 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2023-11-06 23:09:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:36,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-06 23:09:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:36,469 INFO L225 Difference]: With dead ends: 85 [2023-11-06 23:09:36,469 INFO L226 Difference]: Without dead ends: 85 [2023-11-06 23:09:36,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:36,471 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:36,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 63 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-06 23:09:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-11-06 23:09:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.3125) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2023-11-06 23:09:36,480 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 37 [2023-11-06 23:09:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:36,481 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2023-11-06 23:09:36,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2023-11-06 23:09:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 23:09:36,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:36,483 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:36,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:09:36,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:36,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 1 times [2023-11-06 23:09:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193783218] [2023-11-06 23:09:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-06 23:09:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193783218] [2023-11-06 23:09:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193783218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:36,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730389998] [2023-11-06 23:09:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:36,601 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:36,673 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2023-11-06 23:09:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:36,674 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 37 [2023-11-06 23:09:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:36,675 INFO L225 Difference]: With dead ends: 78 [2023-11-06 23:09:36,675 INFO L226 Difference]: Without dead ends: 78 [2023-11-06 23:09:36,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:36,680 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 53 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:36,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-06 23:09:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-06 23:09:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.28125) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-11-06 23:09:36,696 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 37 [2023-11-06 23:09:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:36,697 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-11-06 23:09:36,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-11-06 23:09:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 23:09:36,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:36,698 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:36,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:09:36,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:36,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -708557702, now seen corresponding path program 1 times [2023-11-06 23:09:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:36,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757362217] [2023-11-06 23:09:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757362217] [2023-11-06 23:09:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757362217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:09:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309938897] [2023-11-06 23:09:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:36,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:36,832 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:36,862 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2023-11-06 23:09:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-06 23:09:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:36,864 INFO L225 Difference]: With dead ends: 77 [2023-11-06 23:09:36,864 INFO L226 Difference]: Without dead ends: 77 [2023-11-06 23:09:36,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:36,865 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:36,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-06 23:09:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-06 23:09:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.265625) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-11-06 23:09:36,870 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 38 [2023-11-06 23:09:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:36,871 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-11-06 23:09:36,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-11-06 23:09:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 23:09:36,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:36,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:09:36,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:36,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -708557701, now seen corresponding path program 1 times [2023-11-06 23:09:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785364333] [2023-11-06 23:09:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785364333] [2023-11-06 23:09:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785364333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:37,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119553468] [2023-11-06 23:09:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:37,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:37,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:37,046 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:37,120 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2023-11-06 23:09:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:37,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-06 23:09:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:37,122 INFO L225 Difference]: With dead ends: 80 [2023-11-06 23:09:37,122 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 23:09:37,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:37,123 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:37,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 60 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 23:09:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-11-06 23:09:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-11-06 23:09:37,129 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 38 [2023-11-06 23:09:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:37,130 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-11-06 23:09:37,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-11-06 23:09:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 23:09:37,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:37,132 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:37,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:09:37,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:37,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 414994334, now seen corresponding path program 1 times [2023-11-06 23:09:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:37,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18183150] [2023-11-06 23:09:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18183150] [2023-11-06 23:09:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18183150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054748758] [2023-11-06 23:09:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:37,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:37,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:37,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:09:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:37,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 23:09:37,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:37,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:38,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054748758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:38,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:38,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-11-06 23:09:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691618053] [2023-11-06 23:09:38,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:09:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:09:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:09:38,176 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:38,416 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2023-11-06 23:09:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 42 [2023-11-06 23:09:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:38,420 INFO L225 Difference]: With dead ends: 96 [2023-11-06 23:09:38,420 INFO L226 Difference]: Without dead ends: 96 [2023-11-06 23:09:38,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:09:38,423 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 290 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:38,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 91 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-06 23:09:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2023-11-06 23:09:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 91 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-11-06 23:09:38,436 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 42 [2023-11-06 23:09:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:38,436 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-11-06 23:09:38,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-11-06 23:09:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 23:09:38,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:38,442 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:38,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:38,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:38,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:38,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash -20077561, now seen corresponding path program 1 times [2023-11-06 23:09:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501076364] [2023-11-06 23:09:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501076364] [2023-11-06 23:09:38,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501076364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109453328] [2023-11-06 23:09:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:38,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:38,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:09:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:38,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:09:38,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:39,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109453328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:39,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:39,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 23:09:39,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725893055] [2023-11-06 23:09:39,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:39,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:09:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:09:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:39,473 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:39,685 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2023-11-06 23:09:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 43 [2023-11-06 23:09:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:39,688 INFO L225 Difference]: With dead ends: 93 [2023-11-06 23:09:39,688 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 23:09:39,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:09:39,689 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 161 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:39,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 173 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 23:09:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-06 23:09:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.2125) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2023-11-06 23:09:39,698 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 43 [2023-11-06 23:09:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:39,701 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2023-11-06 23:09:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2023-11-06 23:09:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 23:09:39,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:39,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:39,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:39,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:39,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:39,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1470341546, now seen corresponding path program 2 times [2023-11-06 23:09:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388130823] [2023-11-06 23:09:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388130823] [2023-11-06 23:09:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388130823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531955431] [2023-11-06 23:09:40,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:40,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:40,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:40,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:40,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:09:40,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:09:40,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:40,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 23:09:40,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:40,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531955431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2023-11-06 23:09:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108799378] [2023-11-06 23:09:40,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:40,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:09:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:09:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:09:40,952 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:41,226 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-11-06 23:09:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:09:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 57 [2023-11-06 23:09:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:41,228 INFO L225 Difference]: With dead ends: 94 [2023-11-06 23:09:41,228 INFO L226 Difference]: Without dead ends: 94 [2023-11-06 23:09:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:09:41,230 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 94 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:41,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 71 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-06 23:09:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-11-06 23:09:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.2) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2023-11-06 23:09:41,238 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 57 [2023-11-06 23:09:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2023-11-06 23:09:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2023-11-06 23:09:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 23:09:41,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:41,243 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:41,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:09:41,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:41,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1664052357, now seen corresponding path program 2 times [2023-11-06 23:09:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962133684] [2023-11-06 23:09:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:41,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962133684] [2023-11-06 23:09:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962133684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280043449] [2023-11-06 23:09:41,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:41,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:41,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:41,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:41,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:09:41,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:09:41,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:41,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:09:41,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-06 23:09:42,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-06 23:09:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280043449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:43,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-11-06 23:09:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294939974] [2023-11-06 23:09:43,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:43,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:09:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:09:43,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:09:43,410 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:43,819 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2023-11-06 23:09:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:43,820 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 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 58 [2023-11-06 23:09:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:43,820 INFO L225 Difference]: With dead ends: 100 [2023-11-06 23:09:43,820 INFO L226 Difference]: Without dead ends: 100 [2023-11-06 23:09:43,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-11-06 23:09:43,822 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 295 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:43,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 164 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:09:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-06 23:09:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-11-06 23:09:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2023-11-06 23:09:43,825 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 58 [2023-11-06 23:09:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:43,826 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2023-11-06 23:09:43,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2023-11-06 23:09:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 23:09:43,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:43,827 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:43,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:44,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:09:44,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:44,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 797853176, now seen corresponding path program 1 times [2023-11-06 23:09:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926583126] [2023-11-06 23:09:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:44,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:44,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926583126] [2023-11-06 23:09:44,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926583126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:44,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434413939] [2023-11-06 23:09:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:44,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:44,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:44,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:09:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:44,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:09:44,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:44,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 23:09:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434413939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:44,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:44,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-11-06 23:09:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366061485] [2023-11-06 23:09:44,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:44,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:09:44,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:09:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:44,531 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:44,602 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2023-11-06 23:09:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 70 [2023-11-06 23:09:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:44,604 INFO L225 Difference]: With dead ends: 119 [2023-11-06 23:09:44,604 INFO L226 Difference]: Without dead ends: 119 [2023-11-06 23:09:44,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:44,606 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:44,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 211 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-06 23:09:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-06 23:09:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2023-11-06 23:09:44,611 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 70 [2023-11-06 23:09:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:44,612 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2023-11-06 23:09:44,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2023-11-06 23:09:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 23:09:44,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:44,613 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:44,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:44,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 23:09:44,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:44,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1503565048, now seen corresponding path program 2 times [2023-11-06 23:09:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266203150] [2023-11-06 23:09:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:44,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266203150] [2023-11-06 23:09:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266203150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:45,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:45,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:45,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166893937] [2023-11-06 23:09:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:45,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:45,150 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:45,205 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2023-11-06 23:09:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:45,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-06 23:09:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:45,206 INFO L225 Difference]: With dead ends: 118 [2023-11-06 23:09:45,207 INFO L226 Difference]: Without dead ends: 118 [2023-11-06 23:09:45,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:45,207 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:45,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 99 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-06 23:09:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-06 23:09:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2023-11-06 23:09:45,211 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 90 [2023-11-06 23:09:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:45,212 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2023-11-06 23:09:45,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2023-11-06 23:09:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 23:09:45,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:45,217 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:09:45,217 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:45,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1503565049, now seen corresponding path program 1 times [2023-11-06 23:09:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236664342] [2023-11-06 23:09:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-06 23:09:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236664342] [2023-11-06 23:09:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236664342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:45,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387211956] [2023-11-06 23:09:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:45,747 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:45,860 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2023-11-06 23:09:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:45,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-06 23:09:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:45,862 INFO L225 Difference]: With dead ends: 125 [2023-11-06 23:09:45,862 INFO L226 Difference]: Without dead ends: 125 [2023-11-06 23:09:45,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:45,863 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:45,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 86 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-06 23:09:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2023-11-06 23:09:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-11-06 23:09:45,867 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 90 [2023-11-06 23:09:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:45,867 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-11-06 23:09:45,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-11-06 23:09:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 23:09:45,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:45,869 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:45,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:09:45,869 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:45,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash -634123742, now seen corresponding path program 1 times [2023-11-06 23:09:45,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:45,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367729118] [2023-11-06 23:09:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367729118] [2023-11-06 23:09:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367729118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409364207] [2023-11-06 23:09:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:45,990 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:46,010 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2023-11-06 23:09:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 91 [2023-11-06 23:09:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:46,012 INFO L225 Difference]: With dead ends: 119 [2023-11-06 23:09:46,012 INFO L226 Difference]: Without dead ends: 119 [2023-11-06 23:09:46,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:46,013 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-06 23:09:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-06 23:09:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2023-11-06 23:09:46,017 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 91 [2023-11-06 23:09:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:46,017 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2023-11-06 23:09:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2023-11-06 23:09:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 23:09:46,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:46,018 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:46,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:09:46,019 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:46,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash -634123741, now seen corresponding path program 1 times [2023-11-06 23:09:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776054480] [2023-11-06 23:09:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:46,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:46,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776054480] [2023-11-06 23:09:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776054480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167373358] [2023-11-06 23:09:46,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:46,213 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:46,243 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2023-11-06 23:09:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 91 [2023-11-06 23:09:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:46,245 INFO L225 Difference]: With dead ends: 122 [2023-11-06 23:09:46,245 INFO L226 Difference]: Without dead ends: 122 [2023-11-06 23:09:46,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:46,246 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:46,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-06 23:09:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-11-06 23:09:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.117117117117117) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-11-06 23:09:46,250 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 91 [2023-11-06 23:09:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:46,250 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-11-06 23:09:46,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-11-06 23:09:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 23:09:46,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:46,252 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:46,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:09:46,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:46,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash 789303046, now seen corresponding path program 1 times [2023-11-06 23:09:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112968140] [2023-11-06 23:09:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-06 23:09:46,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:46,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112968140] [2023-11-06 23:09:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112968140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:46,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140699303] [2023-11-06 23:09:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:46,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:46,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:09:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:46,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 23:09:46,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:47,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:47,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:47,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140699303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:49,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-11-06 23:09:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634079320] [2023-11-06 23:09:49,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:09:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:09:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:09:49,194 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:49,478 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2023-11-06 23:09:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:09:49,479 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 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 95 [2023-11-06 23:09:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:49,480 INFO L225 Difference]: With dead ends: 138 [2023-11-06 23:09:49,480 INFO L226 Difference]: Without dead ends: 138 [2023-11-06 23:09:49,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-11-06 23:09:49,481 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 146 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:49,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 151 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-06 23:09:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2023-11-06 23:09:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.136) internal successors, (142), 133 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2023-11-06 23:09:49,485 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 95 [2023-11-06 23:09:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:49,485 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2023-11-06 23:09:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2023-11-06 23:09:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 23:09:49,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:49,487 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:49,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:09:49,694 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:49,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1301409354, now seen corresponding path program 1 times [2023-11-06 23:09:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463652931] [2023-11-06 23:09:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463652931] [2023-11-06 23:09:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463652931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:49,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254111867] [2023-11-06 23:09:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:49,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:49,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:49,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:49,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:09:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:09:50,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:50,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 23:09:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:50,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254111867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:50,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 23:09:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038522179] [2023-11-06 23:09:50,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:50,244 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:50,342 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2023-11-06 23:09:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 96 [2023-11-06 23:09:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:50,344 INFO L225 Difference]: With dead ends: 137 [2023-11-06 23:09:50,344 INFO L226 Difference]: Without dead ends: 137 [2023-11-06 23:09:50,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:50,345 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:50,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 146 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-06 23:09:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2023-11-06 23:09:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 126 states have (on average 1.119047619047619) internal successors, (141), 134 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2023-11-06 23:09:50,350 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 96 [2023-11-06 23:09:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:50,350 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2023-11-06 23:09:50,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2023-11-06 23:09:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 23:09:50,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:50,352 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:50,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:50,558 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:50,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash -265893408, now seen corresponding path program 1 times [2023-11-06 23:09:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85537640] [2023-11-06 23:09:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:50,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:50,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85537640] [2023-11-06 23:09:50,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85537640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:50,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269212054] [2023-11-06 23:09:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:50,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:50,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:50,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:50,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:09:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:50,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:50,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269212054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:50,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:50,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-06 23:09:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521683198] [2023-11-06 23:09:50,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:50,974 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:51,021 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2023-11-06 23:09:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:51,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 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 103 [2023-11-06 23:09:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:51,023 INFO L225 Difference]: With dead ends: 145 [2023-11-06 23:09:51,023 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 23:09:51,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:51,024 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 23:09:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2023-11-06 23:09:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 134 states have (on average 1.1119402985074627) internal successors, (149), 142 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 149 transitions. [2023-11-06 23:09:51,029 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 149 transitions. Word has length 103 [2023-11-06 23:09:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:51,029 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 149 transitions. [2023-11-06 23:09:51,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 149 transitions. [2023-11-06 23:09:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 23:09:51,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:51,031 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:51,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:51,237 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:51,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:51,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1508601145, now seen corresponding path program 2 times [2023-11-06 23:09:51,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:51,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081598506] [2023-11-06 23:09:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-06 23:09:51,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081598506] [2023-11-06 23:09:51,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081598506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999289346] [2023-11-06 23:09:51,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:51,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:51,932 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:51,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:09:52,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:09:52,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:52,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 23:09:52,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:52,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:52,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:53,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999289346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:53,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:53,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2023-11-06 23:09:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456346738] [2023-11-06 23:09:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:53,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:09:53,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:09:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:09:53,201 INFO L87 Difference]: Start difference. First operand 143 states and 149 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:53,551 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2023-11-06 23:09:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:09:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 110 [2023-11-06 23:09:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:53,552 INFO L225 Difference]: With dead ends: 142 [2023-11-06 23:09:53,553 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 23:09:53,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:09:53,554 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:53,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 152 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 23:09:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-06 23:09:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 134 states have (on average 1.0970149253731343) internal successors, (147), 141 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 147 transitions. [2023-11-06 23:09:53,558 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 147 transitions. Word has length 110 [2023-11-06 23:09:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:53,558 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 147 transitions. [2023-11-06 23:09:53,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 147 transitions. [2023-11-06 23:09:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 23:09:53,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:53,559 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:53,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:53,771 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:53,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -478004765, now seen corresponding path program 2 times [2023-11-06 23:09:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940142401] [2023-11-06 23:09:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:54,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940142401] [2023-11-06 23:09:54,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940142401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:54,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083743299] [2023-11-06 23:09:54,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:54,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:54,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:54,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:09:54,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:09:54,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:54,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:09:54,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:54,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 23:09:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-06 23:09:54,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-06 23:09:55,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083743299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:55,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:55,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-11-06 23:09:55,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968352766] [2023-11-06 23:09:55,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:55,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:09:55,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:09:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:09:55,346 INFO L87 Difference]: Start difference. First operand 142 states and 147 transitions. Second operand has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 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) [2023-11-06 23:09:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:55,736 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2023-11-06 23:09:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 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 111 [2023-11-06 23:09:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:55,740 INFO L225 Difference]: With dead ends: 142 [2023-11-06 23:09:55,740 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 23:09:55,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:09:55,742 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 201 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:55,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 205 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:09:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 23:09:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2023-11-06 23:09:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 134 states have (on average 1.0820895522388059) internal successors, (145), 140 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2023-11-06 23:09:55,747 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 111 [2023-11-06 23:09:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:55,747 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2023-11-06 23:09:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 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) [2023-11-06 23:09:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2023-11-06 23:09:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 23:09:55,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:55,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:55,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,955 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:55,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1693145504, now seen corresponding path program 2 times [2023-11-06 23:09:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493144036] [2023-11-06 23:09:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:56,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:56,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493144036] [2023-11-06 23:09:56,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493144036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202879002] [2023-11-06 23:09:56,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:56,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:56,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:09:56,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:09:56,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:56,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:09:56,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:56,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-06 23:09:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202879002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:56,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:56,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-11-06 23:09:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681005173] [2023-11-06 23:09:56,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:09:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:09:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:56,562 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:56,637 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2023-11-06 23:09:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 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 123 [2023-11-06 23:09:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:56,638 INFO L225 Difference]: With dead ends: 161 [2023-11-06 23:09:56,639 INFO L226 Difference]: Without dead ends: 161 [2023-11-06 23:09:56,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:09:56,639 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:56,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-06 23:09:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-06 23:09:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 154 states have (on average 1.0714285714285714) internal successors, (165), 160 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2023-11-06 23:09:56,644 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 123 [2023-11-06 23:09:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:56,644 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2023-11-06 23:09:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2023-11-06 23:09:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-06 23:09:56,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:56,646 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:56,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:56,846 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 23:09:56,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1282766496, now seen corresponding path program 3 times [2023-11-06 23:09:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504889401] [2023-11-06 23:09:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:09:56,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:09:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:09:57,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:09:57,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:09:57,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-06 23:09:57,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-06 23:09:57,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-06 23:09:57,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-06 23:09:57,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-06 23:09:57,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-06 23:09:57,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-06 23:09:57,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-06 23:09:57,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-06 23:09:57,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-06 23:09:57,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-06 23:09:57,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-06 23:09:57,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-11-06 23:09:57,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-11-06 23:09:57,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-11-06 23:09:57,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-11-06 23:09:57,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2023-11-06 23:09:57,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 23:09:57,172 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:57,178 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:09:57,268 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,275 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,286 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:09:57 BoogieIcfgContainer [2023-11-06 23:09:57,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:09:57,311 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:09:57,311 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:09:57,311 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:09:57,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:33" (3/4) ... [2023-11-06 23:09:57,312 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 23:09:57,346 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,353 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,358 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 23:09:57,425 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:09:57,425 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:09:57,430 INFO L158 Benchmark]: Toolchain (without parser) took 25153.59ms. Allocated memory was 186.6MB in the beginning and 434.1MB in the end (delta: 247.5MB). Free memory was 140.2MB in the beginning and 248.9MB in the end (delta: -108.7MB). Peak memory consumption was 139.9MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,430 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 186.6MB. Free memory was 159.9MB in the beginning and 159.6MB in the end (delta: 260.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:09:57,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.73ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 129.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.69ms. Allocated memory is still 186.6MB. Free memory was 129.6MB in the beginning and 127.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,431 INFO L158 Benchmark]: Boogie Preprocessor took 31.90ms. Allocated memory is still 186.6MB. Free memory was 127.9MB in the beginning and 126.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,434 INFO L158 Benchmark]: RCFGBuilder took 495.14ms. Allocated memory is still 186.6MB. Free memory was 126.3MB in the beginning and 110.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,435 INFO L158 Benchmark]: TraceAbstraction took 24152.47ms. Allocated memory was 186.6MB in the beginning and 434.1MB in the end (delta: 247.5MB). Free memory was 110.0MB in the beginning and 258.3MB in the end (delta: -148.3MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,436 INFO L158 Benchmark]: Witness Printer took 114.71ms. Allocated memory is still 434.1MB. Free memory was 258.3MB in the beginning and 248.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:09:57,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 186.6MB. Free memory was 159.9MB in the beginning and 159.6MB in the end (delta: 260.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.73ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 129.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.69ms. Allocated memory is still 186.6MB. Free memory was 129.6MB in the beginning and 127.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.90ms. Allocated memory is still 186.6MB. Free memory was 127.9MB in the beginning and 126.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.14ms. Allocated memory is still 186.6MB. Free memory was 126.3MB in the beginning and 110.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24152.47ms. Allocated memory was 186.6MB in the beginning and 434.1MB in the end (delta: 247.5MB). Free memory was 110.0MB in the beginning and 258.3MB in the end (delta: -148.3MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. * Witness Printer took 114.71ms. Allocated memory is still 434.1MB. Free memory was 258.3MB in the beginning and 248.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] static int array[10]; [L17] static int numbers2[10]; [L36] static int numbers4[10]; VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L45] CALL getNumbers4() [L35] CALL, EXPR getNumbers3() [L25] CALL, EXPR getNumbers2() [L16] CALL, EXPR getNumbers() [L8] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L8] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L12] return array; VAL [\result={1:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}] [L16] RET, EXPR getNumbers() [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=0] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=0] [L18] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=1] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=1] [L18] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=2] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=2] [L18] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=3] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=3] [L18] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=4] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=4] [L18] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=5] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=5] [L18] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=6] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=6] [L18] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=7] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=7] [L18] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=8] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=8] [L18] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L19] EXPR numbers[i] VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=9] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}, numbers={1:0}, numbers[i]=9] [L18] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L21] return numbers2; VAL [\result={2:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L25] RET, EXPR getNumbers2() [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=0, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=0] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=0, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=0] [L27] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=1, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=1] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=1, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=1] [L27] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=2, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=2] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=2, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=2] [L27] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=3, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=3] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=3, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=3] [L27] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=4, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=4] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=4, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=4] [L27] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=5, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=5] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=5, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=5] [L27] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=6, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=6] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=6, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=6] [L27] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=7, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=7] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=7, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=7] [L27] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=8, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=8] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=8, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=8] [L27] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L28] EXPR numbers[i] VAL [array={1:0}, i=9, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=9] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, i=9, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}, numbers[i]=9] [L27] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L31] return numbers3; [L31] return numbers3; VAL [\result={10:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}, numbers={2:0}] [L35] RET, EXPR getNumbers3() [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={10:0}] [L37] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={10:0}] [L38] numbers[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 23.9s, OverallIterations: 24, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1839 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1839 mSDsluCounter, 2679 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1821 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1802 IncrementalHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 858 mSDtfsCounter, 1802 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1844 GetRequests, 1598 SyntacticMatches, 8 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=23, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 32 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 2531 NumberOfCodeBlocks, 2381 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 3108 ConstructedInterpolants, 87 QuantifiedInterpolants, 25203 SizeOfPredicates, 26 NumberOfNonLiveVariables, 3252 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 47 InterpolantComputations, 12 PerfectInterpolantSequences, 10810/11603 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:09:57,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e495ab5e-f0fd-4178-a762-c1e69ee2f0f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)