./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:34,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:34,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-06 22:48:34,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:34,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:34,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:34,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:34,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:34,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:34,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:34,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:34,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:34,890 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:34,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:34,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:34,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:34,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:34,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:34,894 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:48:34,894 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:48:34,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:34,896 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:48:34,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:48:34,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:34,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:34,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:34,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:34,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:34,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:34,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:34,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:34,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:34,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:34,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:34,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:34,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:34,903 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:34,903 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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-06 22:48:35,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:35,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:35,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:35,217 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:35,217 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:35,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:48:38,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:38,777 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:38,777 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:48:38,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/7ef7ece36/c1699433b7fa47038eabeebafbe44c7d/FLAGaf39d3910 [2023-11-06 22:48:38,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/7ef7ece36/c1699433b7fa47038eabeebafbe44c7d [2023-11-06 22:48:38,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:38,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:38,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:38,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:38,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:38,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:38" (1/1) ... [2023-11-06 22:48:38,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30835780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:38, skipping insertion in model container [2023-11-06 22:48:38,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:38" (1/1) ... [2023-11-06 22:48:38,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:39,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:39,354 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:39,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:39,444 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:39,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39 WrapperNode [2023-11-06 22:48:39,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:39,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:39,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:39,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:39,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,516 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2023-11-06 22:48:39,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:39,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:39,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:39,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:39,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,541 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:39,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:39,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:39,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:39,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:39,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:39,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:48:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-06 22:48:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-06 22:48:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:48:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:48:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:48:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:48:39,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:39,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:39,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:39,854 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:39,856 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:40,159 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:40,166 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:40,167 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:48:40,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:40 BoogieIcfgContainer [2023-11-06 22:48:40,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:40,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:40,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:40,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:40,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:38" (1/3) ... [2023-11-06 22:48:40,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104fd7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:40, skipping insertion in model container [2023-11-06 22:48:40,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39" (2/3) ... [2023-11-06 22:48:40,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104fd7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:40, skipping insertion in model container [2023-11-06 22:48:40,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:40" (3/3) ... [2023-11-06 22:48:40,184 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-06 22:48:40,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:40,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:48:40,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:40,276 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;@30d8b0ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:40,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:48:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:48:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:48:40,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:40,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:48:40,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:40,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash -742866944, now seen corresponding path program 1 times [2023-11-06 22:48:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259820532] [2023-11-06 22:48:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:40,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:40,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259820532] [2023-11-06 22:48:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259820532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:40,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:40,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:48:40,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899871415] [2023-11-06 22:48:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:40,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:40,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:40,733 INFO L87 Difference]: Start difference. First operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:40,881 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2023-11-06 22:48:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:48:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:40,894 INFO L225 Difference]: With dead ends: 127 [2023-11-06 22:48:40,894 INFO L226 Difference]: Without dead ends: 121 [2023-11-06 22:48:40,896 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 22:48:40,899 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:40,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 124 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-06 22:48:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2023-11-06 22:48:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.588235294117647) internal successors, (108), 85 states have internal predecessors, (108), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:48:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-11-06 22:48:40,953 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 6 [2023-11-06 22:48:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:40,954 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-11-06 22:48:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-11-06 22:48:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:48:40,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:40,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:48:40,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:40,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:40,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -742866943, now seen corresponding path program 1 times [2023-11-06 22:48:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910621647] [2023-11-06 22:48:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:41,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910621647] [2023-11-06 22:48:41,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910621647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:41,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570085375] [2023-11-06 22:48:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:41,298 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:41,498 INFO L93 Difference]: Finished difference Result 226 states and 313 transitions. [2023-11-06 22:48:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:48:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:41,502 INFO L225 Difference]: With dead ends: 226 [2023-11-06 22:48:41,503 INFO L226 Difference]: Without dead ends: 226 [2023-11-06 22:48:41,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:41,505 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 199 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:41,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 142 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-06 22:48:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 173. [2023-11-06 22:48:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 155 states have internal predecessors, (221), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-11-06 22:48:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 266 transitions. [2023-11-06 22:48:41,548 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 266 transitions. Word has length 6 [2023-11-06 22:48:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:41,549 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 266 transitions. [2023-11-06 22:48:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 266 transitions. [2023-11-06 22:48:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:48:41,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:41,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:48:41,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:41,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1554038803, now seen corresponding path program 1 times [2023-11-06 22:48:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:41,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277092911] [2023-11-06 22:48:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:41,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277092911] [2023-11-06 22:48:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277092911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:41,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999027438] [2023-11-06 22:48:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:41,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:41,818 INFO L87 Difference]: Start difference. First operand 173 states and 266 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:42,053 INFO L93 Difference]: Finished difference Result 249 states and 353 transitions. [2023-11-06 22:48:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:48:42,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:48:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:42,061 INFO L225 Difference]: With dead ends: 249 [2023-11-06 22:48:42,062 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 22:48:42,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:42,070 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 136 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:42,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 165 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:48:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 22:48:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 176. [2023-11-06 22:48:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 158 states have internal predecessors, (224), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-11-06 22:48:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 269 transitions. [2023-11-06 22:48:42,109 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 269 transitions. Word has length 7 [2023-11-06 22:48:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:42,109 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 269 transitions. [2023-11-06 22:48:42,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 269 transitions. [2023-11-06 22:48:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:48:42,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:42,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:48:42,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:42,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash -930562592, now seen corresponding path program 1 times [2023-11-06 22:48:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:42,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126852921] [2023-11-06 22:48:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126852921] [2023-11-06 22:48:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126852921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:42,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:42,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013088453] [2023-11-06 22:48:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:42,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:42,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:42,443 INFO L87 Difference]: Start difference. First operand 176 states and 269 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:42,598 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2023-11-06 22:48:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:48:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:48:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:42,604 INFO L225 Difference]: With dead ends: 228 [2023-11-06 22:48:42,604 INFO L226 Difference]: Without dead ends: 228 [2023-11-06 22:48:42,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:42,615 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 89 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:42,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 207 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-06 22:48:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 176. [2023-11-06 22:48:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.574468085106383) internal successors, (222), 158 states have internal predecessors, (222), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-11-06 22:48:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 267 transitions. [2023-11-06 22:48:42,638 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 267 transitions. Word has length 8 [2023-11-06 22:48:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:42,639 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 267 transitions. [2023-11-06 22:48:42,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 267 transitions. [2023-11-06 22:48:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:48:42,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:42,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:48:42,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:42,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1217330767, now seen corresponding path program 1 times [2023-11-06 22:48:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:42,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847491467] [2023-11-06 22:48:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847491467] [2023-11-06 22:48:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847491467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235632420] [2023-11-06 22:48:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:42,736 INFO L87 Difference]: Start difference. First operand 176 states and 267 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:42,842 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2023-11-06 22:48:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:48:42,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:48:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:42,844 INFO L225 Difference]: With dead ends: 256 [2023-11-06 22:48:42,845 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 22:48:42,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:42,846 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 177 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:42,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 172 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 22:48:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 213. [2023-11-06 22:48:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 176 states have (on average 1.5511363636363635) internal successors, (273), 194 states have internal predecessors, (273), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-11-06 22:48:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 318 transitions. [2023-11-06 22:48:42,866 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 318 transitions. Word has length 9 [2023-11-06 22:48:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:42,867 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 318 transitions. [2023-11-06 22:48:42,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 318 transitions. [2023-11-06 22:48:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:48:42,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:42,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:42,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:48:42,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:42,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -917451838, now seen corresponding path program 1 times [2023-11-06 22:48:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:42,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25791269] [2023-11-06 22:48:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:42,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:42,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25791269] [2023-11-06 22:48:42,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25791269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:42,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:42,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160452369] [2023-11-06 22:48:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:42,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:42,977 INFO L87 Difference]: Start difference. First operand 213 states and 318 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:43,130 INFO L93 Difference]: Finished difference Result 251 states and 333 transitions. [2023-11-06 22:48:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:48:43,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 22:48:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:43,133 INFO L225 Difference]: With dead ends: 251 [2023-11-06 22:48:43,134 INFO L226 Difference]: Without dead ends: 251 [2023-11-06 22:48:43,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:43,141 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:43,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 213 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-06 22:48:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 223. [2023-11-06 22:48:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 185 states have (on average 1.545945945945946) internal successors, (286), 204 states have internal predecessors, (286), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-11-06 22:48:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 331 transitions. [2023-11-06 22:48:43,161 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 331 transitions. Word has length 10 [2023-11-06 22:48:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 331 transitions. [2023-11-06 22:48:43,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 331 transitions. [2023-11-06 22:48:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:48:43,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:43,163 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:48:43,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:43,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -657083128, now seen corresponding path program 1 times [2023-11-06 22:48:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:43,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44298946] [2023-11-06 22:48:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:43,347 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 22:48:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44298946] [2023-11-06 22:48:43,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44298946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282941574] [2023-11-06 22:48:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:43,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:43,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:43,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:48:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:43,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:48:43,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:43,729 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 22:48:43,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:43,887 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 22:48:43,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282941574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:43,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:43,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-11-06 22:48:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684578193] [2023-11-06 22:48:43,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:48:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:48:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:48:43,890 INFO L87 Difference]: Start difference. First operand 223 states and 331 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:44,215 INFO L93 Difference]: Finished difference Result 308 states and 421 transitions. [2023-11-06 22:48:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:48:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 22:48:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:44,219 INFO L225 Difference]: With dead ends: 308 [2023-11-06 22:48:44,219 INFO L226 Difference]: Without dead ends: 308 [2023-11-06 22:48:44,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:48:44,220 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 381 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:44,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 475 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:48:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-06 22:48:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2023-11-06 22:48:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 194 states have (on average 1.4742268041237114) internal successors, (286), 216 states have internal predecessors, (286), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (44), 11 states have call predecessors, (44), 11 states have call successors, (44) [2023-11-06 22:48:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 341 transitions. [2023-11-06 22:48:44,237 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 341 transitions. Word has length 14 [2023-11-06 22:48:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:44,238 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 341 transitions. [2023-11-06 22:48:44,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 341 transitions. [2023-11-06 22:48:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:48:44,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:44,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:44,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:44,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:44,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:44,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1105259462, now seen corresponding path program 1 times [2023-11-06 22:48:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322983237] [2023-11-06 22:48:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:44,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322983237] [2023-11-06 22:48:44,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322983237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599731964] [2023-11-06 22:48:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:44,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:44,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:44,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:48:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:48:44,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:44,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599731964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:45,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-11-06 22:48:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791181792] [2023-11-06 22:48:45,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:48:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:48:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:48:45,043 INFO L87 Difference]: Start difference. First operand 235 states and 341 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:45,442 INFO L93 Difference]: Finished difference Result 335 states and 458 transitions. [2023-11-06 22:48:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:48:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 22:48:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:45,445 INFO L225 Difference]: With dead ends: 335 [2023-11-06 22:48:45,446 INFO L226 Difference]: Without dead ends: 335 [2023-11-06 22:48:45,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:48:45,447 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 253 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:45,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 461 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:48:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-06 22:48:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 243. [2023-11-06 22:48:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 202 states have (on average 1.4702970297029703) internal successors, (297), 224 states have internal predecessors, (297), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (44), 11 states have call predecessors, (44), 11 states have call successors, (44) [2023-11-06 22:48:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 352 transitions. [2023-11-06 22:48:45,462 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 352 transitions. Word has length 15 [2023-11-06 22:48:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:45,462 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 352 transitions. [2023-11-06 22:48:45,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 352 transitions. [2023-11-06 22:48:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:48:45,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:45,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:45,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:45,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:45,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:45,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:45,670 INFO L85 PathProgramCache]: Analyzing trace with hash -96695001, now seen corresponding path program 1 times [2023-11-06 22:48:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892893754] [2023-11-06 22:48:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892893754] [2023-11-06 22:48:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892893754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886621805] [2023-11-06 22:48:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:45,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:45,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:45,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:48:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:48:45,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:46,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886621805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:46,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:46,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-11-06 22:48:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132007707] [2023-11-06 22:48:46,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:46,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:48:46,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:48:46,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:48:46,447 INFO L87 Difference]: Start difference. First operand 243 states and 352 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:47,271 INFO L93 Difference]: Finished difference Result 569 states and 770 transitions. [2023-11-06 22:48:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:48:47,272 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 22:48:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:47,278 INFO L225 Difference]: With dead ends: 569 [2023-11-06 22:48:47,278 INFO L226 Difference]: Without dead ends: 569 [2023-11-06 22:48:47,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:48:47,281 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 565 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:47,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 720 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:48:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-06 22:48:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 352. [2023-11-06 22:48:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 301 states have (on average 1.5016611295681064) internal successors, (452), 327 states have internal predecessors, (452), 14 states have call successors, (14), 10 states have call predecessors, (14), 19 states have return successors, (58), 14 states have call predecessors, (58), 14 states have call successors, (58) [2023-11-06 22:48:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 524 transitions. [2023-11-06 22:48:47,311 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 524 transitions. Word has length 16 [2023-11-06 22:48:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:47,312 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 524 transitions. [2023-11-06 22:48:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 524 transitions. [2023-11-06 22:48:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:48:47,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:47,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:47,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:48:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:47,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:47,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1930496503, now seen corresponding path program 1 times [2023-11-06 22:48:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:47,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207472563] [2023-11-06 22:48:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:47,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:47,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207472563] [2023-11-06 22:48:47,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207472563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:47,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:47,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:48:47,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341781671] [2023-11-06 22:48:47,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:47,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:47,590 INFO L87 Difference]: Start difference. First operand 352 states and 524 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:47,638 INFO L93 Difference]: Finished difference Result 364 states and 509 transitions. [2023-11-06 22:48:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:47,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 22:48:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:47,642 INFO L225 Difference]: With dead ends: 364 [2023-11-06 22:48:47,642 INFO L226 Difference]: Without dead ends: 364 [2023-11-06 22:48:47,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:47,643 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:47,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-06 22:48:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 352. [2023-11-06 22:48:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 305 states have (on average 1.4918032786885247) internal successors, (455), 332 states have internal predecessors, (455), 11 states have call successors, (11), 8 states have call predecessors, (11), 18 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38) [2023-11-06 22:48:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 504 transitions. [2023-11-06 22:48:47,662 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 504 transitions. Word has length 18 [2023-11-06 22:48:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:47,662 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 504 transitions. [2023-11-06 22:48:47,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:47,662 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 504 transitions. [2023-11-06 22:48:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:48:47,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:47,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:48:47,664 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:47,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -487174678, now seen corresponding path program 1 times [2023-11-06 22:48:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444237270] [2023-11-06 22:48:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444237270] [2023-11-06 22:48:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444237270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:48:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521026439] [2023-11-06 22:48:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:47,749 INFO L87 Difference]: Start difference. First operand 352 states and 504 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:47,846 INFO L93 Difference]: Finished difference Result 274 states and 379 transitions. [2023-11-06 22:48:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-06 22:48:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:47,849 INFO L225 Difference]: With dead ends: 274 [2023-11-06 22:48:47,849 INFO L226 Difference]: Without dead ends: 274 [2023-11-06 22:48:47,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:47,850 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 78 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-06 22:48:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2023-11-06 22:48:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 230 states have (on average 1.4782608695652173) internal successors, (340), 254 states have internal predecessors, (340), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-06 22:48:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2023-11-06 22:48:47,868 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 25 [2023-11-06 22:48:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:47,869 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2023-11-06 22:48:47,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2023-11-06 22:48:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:48:47,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:47,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:48:47,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:47,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1487790830, now seen corresponding path program 1 times [2023-11-06 22:48:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:47,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872170605] [2023-11-06 22:48:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:48,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872170605] [2023-11-06 22:48:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872170605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004710480] [2023-11-06 22:48:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:48,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:48,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:48,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:48:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:48,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:48:48,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:48,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:48,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:48:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:48,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:48,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004710480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:48,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:48,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 13 [2023-11-06 22:48:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684878612] [2023-11-06 22:48:48,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:48,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:48:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:48:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:48:48,970 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:49,733 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2023-11-06 22:48:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:48:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-06 22:48:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:49,739 INFO L225 Difference]: With dead ends: 397 [2023-11-06 22:48:49,739 INFO L226 Difference]: Without dead ends: 397 [2023-11-06 22:48:49,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:48:49,741 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 825 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:49,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 169 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:48:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-06 22:48:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 280. [2023-11-06 22:48:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 241 states have (on average 1.4439834024896265) internal successors, (348), 265 states have internal predecessors, (348), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-06 22:48:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 382 transitions. [2023-11-06 22:48:49,756 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 382 transitions. Word has length 27 [2023-11-06 22:48:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:49,757 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 382 transitions. [2023-11-06 22:48:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 382 transitions. [2023-11-06 22:48:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:48:49,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:49,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:49,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:48:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:48:49,969 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:49,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash -692402736, now seen corresponding path program 1 times [2023-11-06 22:48:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550672428] [2023-11-06 22:48:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:50,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550672428] [2023-11-06 22:48:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550672428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13148063] [2023-11-06 22:48:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:50,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:50,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:48:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:50,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:48:50,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:50,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:50,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13148063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:50,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:50,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-06 22:48:50,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943218909] [2023-11-06 22:48:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:50,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:48:50,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:48:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:48:50,381 INFO L87 Difference]: Start difference. First operand 280 states and 382 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:50,481 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2023-11-06 22:48:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:48:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-06 22:48:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:50,484 INFO L225 Difference]: With dead ends: 338 [2023-11-06 22:48:50,484 INFO L226 Difference]: Without dead ends: 338 [2023-11-06 22:48:50,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:48:50,486 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 109 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:50,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 193 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-06 22:48:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 288. [2023-11-06 22:48:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 249 states have (on average 1.429718875502008) internal successors, (356), 273 states have internal predecessors, (356), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-06 22:48:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 390 transitions. [2023-11-06 22:48:50,502 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 390 transitions. Word has length 28 [2023-11-06 22:48:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:50,502 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 390 transitions. [2023-11-06 22:48:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 390 transitions. [2023-11-06 22:48:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:48:50,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:50,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:50,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:50,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:48:50,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:50,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash -457123443, now seen corresponding path program 1 times [2023-11-06 22:48:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814403193] [2023-11-06 22:48:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:51,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:51,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814403193] [2023-11-06 22:48:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814403193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039305517] [2023-11-06 22:48:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:51,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:51,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:51,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:48:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:51,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:48:51,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:51,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:48:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:52,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039305517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:52,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2023-11-06 22:48:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245906060] [2023-11-06 22:48:52,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:48:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:48:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:48:52,331 INFO L87 Difference]: Start difference. First operand 288 states and 390 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:53,255 INFO L93 Difference]: Finished difference Result 334 states and 438 transitions. [2023-11-06 22:48:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:48:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-06 22:48:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:53,258 INFO L225 Difference]: With dead ends: 334 [2023-11-06 22:48:53,258 INFO L226 Difference]: Without dead ends: 334 [2023-11-06 22:48:53,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:48:53,259 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 552 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:53,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 307 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:48:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-06 22:48:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 288. [2023-11-06 22:48:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 249 states have (on average 1.4136546184738956) internal successors, (352), 273 states have internal predecessors, (352), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-06 22:48:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 386 transitions. [2023-11-06 22:48:53,272 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 386 transitions. Word has length 29 [2023-11-06 22:48:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:53,273 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 386 transitions. [2023-11-06 22:48:53,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 386 transitions. [2023-11-06 22:48:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:48:53,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:53,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:53,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:53,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:48:53,480 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:53,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1285924798, now seen corresponding path program 1 times [2023-11-06 22:48:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:53,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700859022] [2023-11-06 22:48:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700859022] [2023-11-06 22:48:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700859022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058410762] [2023-11-06 22:48:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:53,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:53,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:53,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:48:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:53,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:48:53,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:53,942 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:48:53,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:48:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:53,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058410762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:54,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2023-11-06 22:48:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861082133] [2023-11-06 22:48:54,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:54,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:48:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:48:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:48:54,056 INFO L87 Difference]: Start difference. First operand 288 states and 386 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:48:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:54,584 INFO L93 Difference]: Finished difference Result 415 states and 517 transitions. [2023-11-06 22:48:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:48:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-06 22:48:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:54,587 INFO L225 Difference]: With dead ends: 415 [2023-11-06 22:48:54,587 INFO L226 Difference]: Without dead ends: 415 [2023-11-06 22:48:54,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:48:54,589 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 483 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:54,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 251 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:48:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-06 22:48:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 370. [2023-11-06 22:48:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 328 states have (on average 1.3689024390243902) internal successors, (449), 353 states have internal predecessors, (449), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:48:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 482 transitions. [2023-11-06 22:48:54,602 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 482 transitions. Word has length 30 [2023-11-06 22:48:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:54,603 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 482 transitions. [2023-11-06 22:48:54,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:48:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 482 transitions. [2023-11-06 22:48:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:48:54,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:54,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:54,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:54,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:48:54,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:54,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1208963025, now seen corresponding path program 1 times [2023-11-06 22:48:54,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:54,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647302340] [2023-11-06 22:48:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647302340] [2023-11-06 22:48:55,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647302340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461582205] [2023-11-06 22:48:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:55,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:55,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:55,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:55,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:48:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:48:55,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:55,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:55,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:48:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461582205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:55,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2023-11-06 22:48:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923098232] [2023-11-06 22:48:55,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:55,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:48:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:48:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:48:55,716 INFO L87 Difference]: Start difference. First operand 370 states and 482 transitions. Second operand has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:56,504 INFO L93 Difference]: Finished difference Result 436 states and 532 transitions. [2023-11-06 22:48:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:48:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-11-06 22:48:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:56,507 INFO L225 Difference]: With dead ends: 436 [2023-11-06 22:48:56,507 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:48:56,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:48:56,510 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 757 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:56,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 322 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:48:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:48:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 386. [2023-11-06 22:48:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 343 states have (on average 1.3760932944606414) internal successors, (472), 369 states have internal predecessors, (472), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:48:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 501 transitions. [2023-11-06 22:48:56,526 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 501 transitions. Word has length 31 [2023-11-06 22:48:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:56,526 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 501 transitions. [2023-11-06 22:48:56,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 501 transitions. [2023-11-06 22:48:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:48:56,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:56,528 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:56,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:48:56,730 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:56,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash -219964683, now seen corresponding path program 1 times [2023-11-06 22:48:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716208597] [2023-11-06 22:48:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716208597] [2023-11-06 22:48:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716208597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649648379] [2023-11-06 22:48:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:57,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:57,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:57,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:48:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:48:57,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:57,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:48:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649648379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:57,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2023-11-06 22:48:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308737494] [2023-11-06 22:48:57,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:48:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:48:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:48:57,813 INFO L87 Difference]: Start difference. First operand 386 states and 501 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:58,851 INFO L93 Difference]: Finished difference Result 488 states and 599 transitions. [2023-11-06 22:48:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:48:58,852 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2023-11-06 22:48:58,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:58,855 INFO L225 Difference]: With dead ends: 488 [2023-11-06 22:48:58,855 INFO L226 Difference]: Without dead ends: 488 [2023-11-06 22:48:58,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 22:48:58,857 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 623 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:58,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 252 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:48:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-06 22:48:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2023-11-06 22:48:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 345 states have (on average 1.318840579710145) internal successors, (455), 368 states have internal predecessors, (455), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:48:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 484 transitions. [2023-11-06 22:48:58,875 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 484 transitions. Word has length 35 [2023-11-06 22:48:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 484 transitions. [2023-11-06 22:48:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:48:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 484 transitions. [2023-11-06 22:48:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:48:58,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:58,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:58,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:59,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:48:59,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:59,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1858113804, now seen corresponding path program 1 times [2023-11-06 22:48:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262520791] [2023-11-06 22:48:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262520791] [2023-11-06 22:48:59,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262520791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:59,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365864080] [2023-11-06 22:48:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:59,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:59,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:48:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:48:59,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365864080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:59,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:59,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-11-06 22:48:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994440441] [2023-11-06 22:48:59,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:59,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:59,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:59,402 INFO L87 Difference]: Start difference. First operand 385 states and 484 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:59,509 INFO L93 Difference]: Finished difference Result 386 states and 481 transitions. [2023-11-06 22:48:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:48:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-06 22:48:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:59,512 INFO L225 Difference]: With dead ends: 386 [2023-11-06 22:48:59,512 INFO L226 Difference]: Without dead ends: 386 [2023-11-06 22:48:59,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:48:59,514 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 79 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:59,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 74 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-06 22:48:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 383. [2023-11-06 22:48:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 345 states have (on average 1.3014492753623188) internal successors, (449), 366 states have internal predecessors, (449), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:48:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2023-11-06 22:48:59,528 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 40 [2023-11-06 22:48:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:59,529 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2023-11-06 22:48:59,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:48:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2023-11-06 22:48:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:48:59,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:59,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:59,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-06 22:48:59,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:48:59,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:48:59,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1766952978, now seen corresponding path program 1 times [2023-11-06 22:48:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402591047] [2023-11-06 22:48:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:48:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402591047] [2023-11-06 22:48:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402591047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162907056] [2023-11-06 22:48:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:59,846 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:59,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:48:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:48:59,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:00,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162907056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:00,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:00,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-11-06 22:49:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683124838] [2023-11-06 22:49:00,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:00,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:00,066 INFO L87 Difference]: Start difference. First operand 383 states and 478 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:00,182 INFO L93 Difference]: Finished difference Result 384 states and 475 transitions. [2023-11-06 22:49:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-06 22:49:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:00,185 INFO L225 Difference]: With dead ends: 384 [2023-11-06 22:49:00,186 INFO L226 Difference]: Without dead ends: 384 [2023-11-06 22:49:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:00,187 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:00,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 54 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-06 22:49:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2023-11-06 22:49:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 345 states have (on average 1.2840579710144928) internal successors, (443), 364 states have internal predecessors, (443), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 472 transitions. [2023-11-06 22:49:00,200 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 472 transitions. Word has length 41 [2023-11-06 22:49:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:00,201 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 472 transitions. [2023-11-06 22:49:00,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 472 transitions. [2023-11-06 22:49:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:49:00,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:00,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:00,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:00,408 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:00,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1059032630, now seen corresponding path program 1 times [2023-11-06 22:49:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579264701] [2023-11-06 22:49:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:00,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:00,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579264701] [2023-11-06 22:49:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579264701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:00,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757220008] [2023-11-06 22:49:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:00,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:00,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:00,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:49:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:00,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:49:00,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:00,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:49:00,808 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:00,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:00,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757220008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:00,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-11-06 22:49:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648130878] [2023-11-06 22:49:00,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:00,997 INFO L87 Difference]: Start difference. First operand 381 states and 472 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:49:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:01,195 INFO L93 Difference]: Finished difference Result 409 states and 499 transitions. [2023-11-06 22:49:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2023-11-06 22:49:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:01,198 INFO L225 Difference]: With dead ends: 409 [2023-11-06 22:49:01,198 INFO L226 Difference]: Without dead ends: 409 [2023-11-06 22:49:01,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:01,199 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 83 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:01,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 136 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-06 22:49:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 381. [2023-11-06 22:49:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 345 states have (on average 1.2782608695652173) internal successors, (441), 364 states have internal predecessors, (441), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2023-11-06 22:49:01,214 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 42 [2023-11-06 22:49:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:01,215 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2023-11-06 22:49:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:49:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2023-11-06 22:49:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 22:49:01,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:01,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:01,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:01,422 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:01,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1461274395, now seen corresponding path program 1 times [2023-11-06 22:49:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:01,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078551195] [2023-11-06 22:49:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078551195] [2023-11-06 22:49:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078551195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852646866] [2023-11-06 22:49:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:01,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:01,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:49:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:49:01,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:01,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852646866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-06 22:49:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285018565] [2023-11-06 22:49:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:01,639 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:01,666 INFO L93 Difference]: Finished difference Result 447 states and 527 transitions. [2023-11-06 22:49:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-11-06 22:49:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:01,669 INFO L225 Difference]: With dead ends: 447 [2023-11-06 22:49:01,670 INFO L226 Difference]: Without dead ends: 447 [2023-11-06 22:49:01,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:01,670 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 59 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:01,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 168 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-06 22:49:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 372. [2023-11-06 22:49:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 336 states have (on average 1.25) internal successors, (420), 355 states have internal predecessors, (420), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 449 transitions. [2023-11-06 22:49:01,699 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 449 transitions. Word has length 45 [2023-11-06 22:49:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:01,700 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 449 transitions. [2023-11-06 22:49:01,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 449 transitions. [2023-11-06 22:49:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:49:01,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:01,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:01,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-06 22:49:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:49:01,907 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:01,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 629474045, now seen corresponding path program 1 times [2023-11-06 22:49:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349600991] [2023-11-06 22:49:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:01,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349600991] [2023-11-06 22:49:01,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349600991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255800783] [2023-11-06 22:49:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:01,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:01,988 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:02,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:49:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:02,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:49:02,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:02,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255800783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:02,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:02,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:49:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438410529] [2023-11-06 22:49:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:02,100 INFO L87 Difference]: Start difference. First operand 372 states and 449 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:02,108 INFO L93 Difference]: Finished difference Result 371 states and 446 transitions. [2023-11-06 22:49:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2023-11-06 22:49:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:02,111 INFO L225 Difference]: With dead ends: 371 [2023-11-06 22:49:02,111 INFO L226 Difference]: Without dead ends: 371 [2023-11-06 22:49:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:02,113 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-06 22:49:02,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-06 22:49:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 336 states have (on average 1.2410714285714286) internal successors, (417), 354 states have internal predecessors, (417), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 446 transitions. [2023-11-06 22:49:02,126 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 446 transitions. Word has length 47 [2023-11-06 22:49:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:02,127 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 446 transitions. [2023-11-06 22:49:02,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 446 transitions. [2023-11-06 22:49:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:49:02,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:02,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:02,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:02,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:49:02,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:02,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1961141011, now seen corresponding path program 1 times [2023-11-06 22:49:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:02,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730737753] [2023-11-06 22:49:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:02,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730737753] [2023-11-06 22:49:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730737753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765025083] [2023-11-06 22:49:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:02,403 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:02,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:49:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:02,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:49:02,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765025083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:02,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-06 22:49:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748047132] [2023-11-06 22:49:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:02,587 INFO L87 Difference]: Start difference. First operand 371 states and 446 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:02,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:02,619 INFO L93 Difference]: Finished difference Result 370 states and 443 transitions. [2023-11-06 22:49:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:02,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2023-11-06 22:49:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:02,622 INFO L225 Difference]: With dead ends: 370 [2023-11-06 22:49:02,622 INFO L226 Difference]: Without dead ends: 370 [2023-11-06 22:49:02,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:02,623 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 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 22:49:02,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-06 22:49:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-11-06 22:49:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 336 states have (on average 1.2321428571428572) internal successors, (414), 353 states have internal predecessors, (414), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 443 transitions. [2023-11-06 22:49:02,634 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 443 transitions. Word has length 48 [2023-11-06 22:49:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:02,634 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 443 transitions. [2023-11-06 22:49:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 443 transitions. [2023-11-06 22:49:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:49:02,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:02,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:02,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:02,847 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:02,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -665829121, now seen corresponding path program 1 times [2023-11-06 22:49:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806747380] [2023-11-06 22:49:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806747380] [2023-11-06 22:49:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806747380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105582929] [2023-11-06 22:49:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:02,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:02,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:49:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:03,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:49:03,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:03,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105582929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:03,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:49:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084429167] [2023-11-06 22:49:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:03,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:03,023 INFO L87 Difference]: Start difference. First operand 370 states and 443 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:03,032 INFO L93 Difference]: Finished difference Result 369 states and 440 transitions. [2023-11-06 22:49:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:03,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-06 22:49:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:03,034 INFO L225 Difference]: With dead ends: 369 [2023-11-06 22:49:03,035 INFO L226 Difference]: Without dead ends: 369 [2023-11-06 22:49:03,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:03,036 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:03,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:03,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-06 22:49:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-06 22:49:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 336 states have (on average 1.2232142857142858) internal successors, (411), 352 states have internal predecessors, (411), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 440 transitions. [2023-11-06 22:49:03,063 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 440 transitions. Word has length 49 [2023-11-06 22:49:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:03,063 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 440 transitions. [2023-11-06 22:49:03,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 440 transitions. [2023-11-06 22:49:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:49:03,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:03,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:03,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 22:49:03,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:03,271 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:03,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 800966878, now seen corresponding path program 1 times [2023-11-06 22:49:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:03,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367416670] [2023-11-06 22:49:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:03,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367416670] [2023-11-06 22:49:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367416670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148158070] [2023-11-06 22:49:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:03,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:03,599 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:03,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:49:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:49:03,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:03,858 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:49:03,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:49:04,006 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:04,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:04,050 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:49:04,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 22:49:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:04,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:04,167 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:49:04,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-11-06 22:49:04,375 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:49:04,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-11-06 22:49:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:04,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148158070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:04,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:04,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 25 [2023-11-06 22:49:04,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759451441] [2023-11-06 22:49:04,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:04,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:49:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:49:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:49:04,614 INFO L87 Difference]: Start difference. First operand 369 states and 440 transitions. Second operand has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:49:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:05,005 INFO L93 Difference]: Finished difference Result 375 states and 444 transitions. [2023-11-06 22:49:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:49:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 51 [2023-11-06 22:49:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:05,008 INFO L225 Difference]: With dead ends: 375 [2023-11-06 22:49:05,008 INFO L226 Difference]: Without dead ends: 375 [2023-11-06 22:49:05,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:49:05,009 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 260 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 159 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:49:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-06 22:49:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 369. [2023-11-06 22:49:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 336 states have (on average 1.2202380952380953) internal successors, (410), 352 states have internal predecessors, (410), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-06 22:49:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 439 transitions. [2023-11-06 22:49:05,028 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 439 transitions. Word has length 51 [2023-11-06 22:49:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:05,028 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 439 transitions. [2023-11-06 22:49:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:49:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 439 transitions. [2023-11-06 22:49:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:49:05,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:05,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:05,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:05,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:49:05,236 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:05,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:05,236 INFO L85 PathProgramCache]: Analyzing trace with hash -305163153, now seen corresponding path program 1 times [2023-11-06 22:49:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:05,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588231015] [2023-11-06 22:49:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:05,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:05,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588231015] [2023-11-06 22:49:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588231015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588580607] [2023-11-06 22:49:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:05,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:05,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:05,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:05,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:49:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:49:05,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:05,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:05,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588580607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:05,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:05,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2023-11-06 22:49:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206875540] [2023-11-06 22:49:05,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:05,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:49:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:49:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:05,600 INFO L87 Difference]: Start difference. First operand 369 states and 439 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:49:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:05,781 INFO L93 Difference]: Finished difference Result 340 states and 392 transitions. [2023-11-06 22:49:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:49:05,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2023-11-06 22:49:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:05,784 INFO L225 Difference]: With dead ends: 340 [2023-11-06 22:49:05,784 INFO L226 Difference]: Without dead ends: 340 [2023-11-06 22:49:05,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:05,785 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 100 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:05,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-06 22:49:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 325. [2023-11-06 22:49:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 297 states have (on average 1.2053872053872055) internal successors, (358), 310 states have internal predecessors, (358), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:49:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 380 transitions. [2023-11-06 22:49:05,796 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 380 transitions. Word has length 51 [2023-11-06 22:49:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:05,796 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 380 transitions. [2023-11-06 22:49:05,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:49:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 380 transitions. [2023-11-06 22:49:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:49:05,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:05,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:05,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:06,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:06,004 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:06,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash -26371320, now seen corresponding path program 1 times [2023-11-06 22:49:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820515491] [2023-11-06 22:49:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:49:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:06,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820515491] [2023-11-06 22:49:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820515491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64891277] [2023-11-06 22:49:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:06,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:06,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:06,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:49:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:49:06,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:06,493 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:06,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:06,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64891277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:06,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:06,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2023-11-06 22:49:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443410178] [2023-11-06 22:49:06,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:49:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:49:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:49:06,602 INFO L87 Difference]: Start difference. First operand 325 states and 380 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:49:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:07,063 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2023-11-06 22:49:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2023-11-06 22:49:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:07,066 INFO L225 Difference]: With dead ends: 343 [2023-11-06 22:49:07,066 INFO L226 Difference]: Without dead ends: 343 [2023-11-06 22:49:07,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:49:07,067 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 237 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:07,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 225 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:49:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-06 22:49:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 325. [2023-11-06 22:49:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 297 states have (on average 1.1986531986531987) internal successors, (356), 310 states have internal predecessors, (356), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:49:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 378 transitions. [2023-11-06 22:49:07,076 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 378 transitions. Word has length 52 [2023-11-06 22:49:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:07,077 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 378 transitions. [2023-11-06 22:49:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:49:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 378 transitions. [2023-11-06 22:49:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:49:07,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:07,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:07,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:07,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:49:07,284 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:07,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -939830577, now seen corresponding path program 1 times [2023-11-06 22:49:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90649543] [2023-11-06 22:49:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:08,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90649543] [2023-11-06 22:49:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90649543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447619975] [2023-11-06 22:49:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:08,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:08,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:08,153 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:08,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:49:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:49:08,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:08,514 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:49:08,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:49:08,816 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:08,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:08,892 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:49:08,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 22:49:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:09,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:09,190 INFO L322 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-11-06 22:49:09,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 165 [2023-11-06 22:49:09,582 INFO L322 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-11-06 22:49:09,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 101 [2023-11-06 22:49:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447619975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:09,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 14] total 43 [2023-11-06 22:49:09,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433796213] [2023-11-06 22:49:09,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-06 22:49:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-06 22:49:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:49:10,002 INFO L87 Difference]: Start difference. First operand 325 states and 378 transitions. Second operand has 45 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 36 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:49:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:11,122 INFO L93 Difference]: Finished difference Result 392 states and 442 transitions. [2023-11-06 22:49:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:49:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 36 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2023-11-06 22:49:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:11,125 INFO L225 Difference]: With dead ends: 392 [2023-11-06 22:49:11,125 INFO L226 Difference]: Without dead ends: 392 [2023-11-06 22:49:11,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2023-11-06 22:49:11,127 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 727 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:11,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 288 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:49:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-06 22:49:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 325. [2023-11-06 22:49:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 297 states have (on average 1.1952861952861953) internal successors, (355), 310 states have internal predecessors, (355), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:49:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 377 transitions. [2023-11-06 22:49:11,138 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 377 transitions. Word has length 52 [2023-11-06 22:49:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:11,138 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 377 transitions. [2023-11-06 22:49:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 36 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:49:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 377 transitions. [2023-11-06 22:49:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:49:11,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:11,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:11,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:49:11,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:11,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash -817510871, now seen corresponding path program 1 times [2023-11-06 22:49:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014125215] [2023-11-06 22:49:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:49:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:49:11,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014125215] [2023-11-06 22:49:11,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014125215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529207364] [2023-11-06 22:49:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:11,712 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:11,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:49:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:11,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:49:11,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:12,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:49:12,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:49:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:12,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529207364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:12,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:12,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2023-11-06 22:49:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234741079] [2023-11-06 22:49:12,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:12,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:49:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:12,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:49:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:49:12,257 INFO L87 Difference]: Start difference. First operand 325 states and 377 transitions. Second operand has 16 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:49:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:12,985 INFO L93 Difference]: Finished difference Result 339 states and 381 transitions. [2023-11-06 22:49:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:49:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2023-11-06 22:49:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:12,987 INFO L225 Difference]: With dead ends: 339 [2023-11-06 22:49:12,988 INFO L226 Difference]: Without dead ends: 339 [2023-11-06 22:49:12,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:49:12,989 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 318 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:12,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 275 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:49:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-06 22:49:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2023-11-06 22:49:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 297 states have (on average 1.1683501683501682) internal successors, (347), 309 states have internal predecessors, (347), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:49:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 369 transitions. [2023-11-06 22:49:12,998 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 369 transitions. Word has length 53 [2023-11-06 22:49:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:12,998 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 369 transitions. [2023-11-06 22:49:12,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:49:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 369 transitions. [2023-11-06 22:49:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:49:13,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:13,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:13,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:13,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:49:13,206 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:13,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1556293263, now seen corresponding path program 1 times [2023-11-06 22:49:13,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:13,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968346876] [2023-11-06 22:49:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:49:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968346876] [2023-11-06 22:49:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968346876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385032758] [2023-11-06 22:49:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:13,273 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:13,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:49:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:49:13,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:49:13,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385032758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-06 22:49:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147287622] [2023-11-06 22:49:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:13,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:13,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:13,398 INFO L87 Difference]: Start difference. First operand 324 states and 369 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:13,402 INFO L93 Difference]: Finished difference Result 264 states and 293 transitions. [2023-11-06 22:49:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:13,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-06 22:49:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:13,404 INFO L225 Difference]: With dead ends: 264 [2023-11-06 22:49:13,404 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 22:49:13,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:13,405 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:13,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 22:49:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2023-11-06 22:49:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 241 states have (on average 1.1410788381742738) internal successors, (275), 248 states have internal predecessors, (275), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:49:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions. [2023-11-06 22:49:13,414 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 52 [2023-11-06 22:49:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:13,414 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 290 transitions. [2023-11-06 22:49:13,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions. [2023-11-06 22:49:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:49:13,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:13,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:13,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:13,621 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:13,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1234050895, now seen corresponding path program 1 times [2023-11-06 22:49:13,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:13,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861255565] [2023-11-06 22:49:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861255565] [2023-11-06 22:49:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861255565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254114534] [2023-11-06 22:49:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:14,105 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:14,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:49:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:14,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:49:14,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:14,317 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:14,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:14,423 WARN L861 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| Int)) (= |c_#valid| (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| 1) |c_old(~global~0.base)| (select |c_#valid| |c_old(~global~0.base)|)))) is different from true [2023-11-06 22:49:14,458 INFO L322 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2023-11-06 22:49:14,458 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 2 case distinctions, treesize of input 17 treesize of output 18 [2023-11-06 22:49:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-11-06 22:49:14,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254114534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:14,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2023-11-06 22:49:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215081472] [2023-11-06 22:49:14,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:49:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:49:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=409, Unknown=1, NotChecked=42, Total=552 [2023-11-06 22:49:14,873 INFO L87 Difference]: Start difference. First operand 261 states and 290 transitions. Second operand has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:49:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:15,651 INFO L93 Difference]: Finished difference Result 269 states and 298 transitions. [2023-11-06 22:49:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:49:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2023-11-06 22:49:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:15,652 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:49:15,653 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 22:49:15,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=361, Invalid=1124, Unknown=1, NotChecked=74, Total=1560 [2023-11-06 22:49:15,654 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 289 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:15,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 227 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 343 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2023-11-06 22:49:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 22:49:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 260. [2023-11-06 22:49:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 241 states have (on average 1.1369294605809128) internal successors, (274), 247 states have internal predecessors, (274), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:49:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 289 transitions. [2023-11-06 22:49:15,665 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 289 transitions. Word has length 54 [2023-11-06 22:49:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:15,665 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 289 transitions. [2023-11-06 22:49:15,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:49:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 289 transitions. [2023-11-06 22:49:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:49:15,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:15,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:15,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:15,872 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:15,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1095435096, now seen corresponding path program 1 times [2023-11-06 22:49:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947534040] [2023-11-06 22:49:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:16,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:16,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947534040] [2023-11-06 22:49:16,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947534040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78371132] [2023-11-06 22:49:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:16,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:16,587 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:49:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:16,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:49:16,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:16,983 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:16,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:17,350 INFO L322 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2023-11-06 22:49:17,350 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 2 case distinctions, treesize of input 17 treesize of output 18 [2023-11-06 22:49:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:17,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78371132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:17,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2023-11-06 22:49:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312890406] [2023-11-06 22:49:17,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:49:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:49:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=812, Unknown=4, NotChecked=0, Total=930 [2023-11-06 22:49:17,724 INFO L87 Difference]: Start difference. First operand 260 states and 289 transitions. Second operand has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:49:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:18,983 INFO L93 Difference]: Finished difference Result 332 states and 361 transitions. [2023-11-06 22:49:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:49:18,984 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2023-11-06 22:49:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:18,986 INFO L225 Difference]: With dead ends: 332 [2023-11-06 22:49:18,986 INFO L226 Difference]: Without dead ends: 332 [2023-11-06 22:49:18,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=1897, Unknown=4, NotChecked=0, Total=2352 [2023-11-06 22:49:18,988 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 325 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 53 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:18,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 193 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 526 Invalid, 20 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:49:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-06 22:49:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 259. [2023-11-06 22:49:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 241 states have (on average 1.1327800829875518) internal successors, (273), 246 states have internal predecessors, (273), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:49:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 288 transitions. [2023-11-06 22:49:18,997 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 288 transitions. Word has length 60 [2023-11-06 22:49:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:18,997 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 288 transitions. [2023-11-06 22:49:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:49:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 288 transitions. [2023-11-06 22:49:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:49:18,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:18,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:19,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:19,206 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:19,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash 401250437, now seen corresponding path program 1 times [2023-11-06 22:49:19,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:19,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810185605] [2023-11-06 22:49:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:19,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810185605] [2023-11-06 22:49:20,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810185605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690061974] [2023-11-06 22:49:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:20,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:20,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:20,153 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:20,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:49:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:20,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 22:49:20,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:21,145 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:21,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:49:21,152 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:49:21,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:49:21,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:49:22,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:49:22,050 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:49:22,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:49:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:22,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690061974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:22,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:22,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 28 [2023-11-06 22:49:22,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938715635] [2023-11-06 22:49:22,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:22,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:49:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:49:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:49:22,433 INFO L87 Difference]: Start difference. First operand 259 states and 288 transitions. Second operand has 30 states, 28 states have (on average 4.0) internal successors, (112), 25 states have internal predecessors, (112), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:49:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:25,605 INFO L93 Difference]: Finished difference Result 337 states and 364 transitions. [2023-11-06 22:49:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:49:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.0) internal successors, (112), 25 states have internal predecessors, (112), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 61 [2023-11-06 22:49:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:25,608 INFO L225 Difference]: With dead ends: 337 [2023-11-06 22:49:25,608 INFO L226 Difference]: Without dead ends: 337 [2023-11-06 22:49:25,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=841, Invalid=3851, Unknown=0, NotChecked=0, Total=4692 [2023-11-06 22:49:25,611 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 516 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:25,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 278 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:49:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-06 22:49:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 258. [2023-11-06 22:49:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 241 states have (on average 1.1286307053941909) internal successors, (272), 245 states have internal predecessors, (272), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:49:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 287 transitions. [2023-11-06 22:49:25,620 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 287 transitions. Word has length 61 [2023-11-06 22:49:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:25,620 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 287 transitions. [2023-11-06 22:49:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.0) internal successors, (112), 25 states have internal predecessors, (112), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:49:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 287 transitions. [2023-11-06 22:49:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:49:25,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:25,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:25,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:25,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:25,828 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:25,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1576724517, now seen corresponding path program 1 times [2023-11-06 22:49:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:25,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623721023] [2023-11-06 22:49:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:49:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:49:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:26,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623721023] [2023-11-06 22:49:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623721023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338150968] [2023-11-06 22:49:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,236 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:49:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:26,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:49:26,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:26,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:49:26,568 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:49:26,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 16 [2023-11-06 22:49:26,601 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:49:26,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:49:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:26,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338150968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:26,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-06 22:49:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367974868] [2023-11-06 22:49:26,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:26,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:49:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:49:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:49:26,715 INFO L87 Difference]: Start difference. First operand 258 states and 287 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:49:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:27,081 INFO L93 Difference]: Finished difference Result 269 states and 297 transitions. [2023-11-06 22:49:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:49:27,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2023-11-06 22:49:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:27,083 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:49:27,083 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 22:49:27,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:49:27,084 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:27,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 169 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 22:49:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 212. [2023-11-06 22:49:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 199 states have (on average 1.1256281407035176) internal successors, (224), 201 states have internal predecessors, (224), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 22:49:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2023-11-06 22:49:27,095 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 66 [2023-11-06 22:49:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:27,095 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2023-11-06 22:49:27,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:49:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2023-11-06 22:49:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:49:27,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:27,097 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:27,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:27,304 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:27,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2065204372, now seen corresponding path program 1 times [2023-11-06 22:49:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171631279] [2023-11-06 22:49:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:27,408 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:49:27,409 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-06 22:49:27,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-06 22:49:27,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-06 22:49:27,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-06 22:49:27,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-06 22:49:27,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-06 22:49:27,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-06 22:49:27,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-06 22:49:27,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-06 22:49:27,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-06 22:49:27,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-06 22:49:27,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2023-11-06 22:49:27,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2023-11-06 22:49:27,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2023-11-06 22:49:27,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2023-11-06 22:49:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2023-11-06 22:49:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2023-11-06 22:49:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-06 22:49:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-06 22:49:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-06 22:49:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 22:49:27,421 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:27,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:49:27,482 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 22:49:27,487 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 22:49:27,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:49:27 BoogieIcfgContainer [2023-11-06 22:49:27,502 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:49:27,502 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:49:27,502 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:49:27,503 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:49:27,503 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:40" (3/4) ... [2023-11-06 22:49:27,505 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:49:27,507 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:49:27,507 INFO L158 Benchmark]: Toolchain (without parser) took 48679.51ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 107.3MB in the beginning and 171.4MB in the end (delta: -64.2MB). Peak memory consumption was 105.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,508 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 75.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:27,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.94ms. Allocated memory is still 151.0MB. Free memory was 106.8MB in the beginning and 87.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.80ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 85.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,509 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 151.0MB. Free memory was 85.0MB in the beginning and 83.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,509 INFO L158 Benchmark]: RCFGBuilder took 617.13ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 109.2MB in the end (delta: -25.5MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,509 INFO L158 Benchmark]: TraceAbstraction took 47330.05ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 108.5MB in the beginning and 172.5MB in the end (delta: -64.0MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,509 INFO L158 Benchmark]: Witness Printer took 4.71ms. Allocated memory is still 318.8MB. Free memory was 172.5MB in the beginning and 171.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:27,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 75.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.94ms. Allocated memory is still 151.0MB. Free memory was 106.8MB in the beginning and 87.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.80ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 85.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 151.0MB. Free memory was 85.0MB in the beginning and 83.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 617.13ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 109.2MB in the end (delta: -25.5MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * TraceAbstraction took 47330.05ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 108.5MB in the beginning and 172.5MB in the end (delta: -64.0MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. * Witness Printer took 4.71ms. Allocated memory is still 318.8MB. Free memory was 172.5MB in the beginning and 171.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 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 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; VAL [commands={6:0}, global={0:0}, state=0] [L722] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={3:0}, input={3:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={3:0}, input={3:0}, state=0] [L692] COND FALSE !(i < 2) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={3:0}, input={3:0}, state=0] [L722] RET parse_input("c1") VAL [commands={6:0}, global={0:0}, state=0] [L723] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={4:0}, input={4:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={2:0}, global={0:0}, i=1, input={4:0}, input={4:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={4:0}, input={4:0}, state=0] [L692] COND FALSE !(i < 2) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={4:0}, input={4:0}, state=0] [L723] RET parse_input("c1") VAL [commands={6:0}, global={0:0}, state=0] [L724] CALL parse_input("c2") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].state_needed=0, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, commands[i].function={-1:0}, global={0:0}, i=0, input={5:0}, input={5:0}, state=0] [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={-3:0}, state=1, x={-3:0}] [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={-3:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={-3:0}, state=1] - 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: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: 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: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 47.2s, OverallIterations: 35, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 8620 SdHoareTripleChecker+Valid, 7.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8618 mSDsluCounter, 7123 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 87 IncrementalHoareTripleChecker+Unchecked, 5417 mSDsCounter, 852 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7606 IncrementalHoareTripleChecker+Invalid, 8565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 852 mSolverCounterUnsat, 1706 mSDtfsCounter, 7606 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2036 GetRequests, 1422 SyntacticMatches, 8 SemanticMatches, 606 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4550 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=16, InterpolantAutomatonStates: 360, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 1536 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 2336 NumberOfCodeBlocks, 2336 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 2520 ConstructedInterpolants, 136 QuantifiedInterpolants, 24799 SizeOfPredicates, 99 NumberOfNonLiveVariables, 6792 ConjunctsInSsa, 447 ConjunctsInUnsatCore, 69 InterpolantComputations, 14 PerfectInterpolantSequences, 708/1333 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 could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:49:27,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:30,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:30,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-06 22:49:30,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:30,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:30,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:30,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:30,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:30,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:49:30,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:49:30,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:30,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:30,278 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:30,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:30,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:49:30,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:30,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:49:30,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:30,281 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:49:30,282 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:49:30,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:49:30,283 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:49:30,284 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:49:30,285 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:49:30,285 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:49:30,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:49:30,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:30,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:30,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:30,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:49:30,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:30,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:30,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:49:30,290 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:49:30,290 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:49:30,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:49:30,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:49:30,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:49:30,291 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:49:30,292 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:49:30,292 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_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-06 22:49:30,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:30,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:30,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:30,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:30,724 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:30,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:49:34,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:49:34,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:49:34,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:49:34,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/b8641ab0f/94e2c7f826dd4d5e91bfcfecd3eccdd6/FLAG13ff1e1ab [2023-11-06 22:49:34,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/data/b8641ab0f/94e2c7f826dd4d5e91bfcfecd3eccdd6 [2023-11-06 22:49:34,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:49:34,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:49:34,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:34,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:49:34,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:49:34,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:34" (1/1) ... [2023-11-06 22:49:34,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76aecb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:34, skipping insertion in model container [2023-11-06 22:49:34,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:34" (1/1) ... [2023-11-06 22:49:34,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:49:34,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:34,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:49:35,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:35,090 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:49:35,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35 WrapperNode [2023-11-06 22:49:35,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:35,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:35,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:49:35,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:49:35,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,169 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2023-11-06 22:49:35,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:35,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:49:35,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:49:35,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:49:35,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:49:35,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:49:35,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:49:35,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:49:35,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (1/1) ... [2023-11-06 22:49:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:35,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:35,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:49:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:49:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-06 22:49:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-06 22:49:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:49:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:49:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:49:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:49:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:49:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:49:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:49:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:49:35,446 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:49:35,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:49:35,762 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:49:35,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:49:35,769 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:49:35,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:35 BoogieIcfgContainer [2023-11-06 22:49:35,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:49:35,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:49:35,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:49:35,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:49:35,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:34" (1/3) ... [2023-11-06 22:49:35,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec44941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:35, skipping insertion in model container [2023-11-06 22:49:35,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:35" (2/3) ... [2023-11-06 22:49:35,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec44941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:35, skipping insertion in model container [2023-11-06 22:49:35,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:35" (3/3) ... [2023-11-06 22:49:35,781 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-06 22:49:35,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:49:35,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:49:35,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:49:35,856 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;@3f265b4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:49:35,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:49:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:49:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:49:35,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:35,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:49:35,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:35,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash -742866944, now seen corresponding path program 1 times [2023-11-06 22:49:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:35,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757314367] [2023-11-06 22:49:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:35,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:35,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:35,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:35,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:49:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:36,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:49:36,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:36,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:36,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757314367] [2023-11-06 22:49:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757314367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:36,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:36,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706622629] [2023-11-06 22:49:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:36,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:36,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:36,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:36,315 INFO L87 Difference]: Start difference. First operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:36,547 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2023-11-06 22:49:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:49:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:36,563 INFO L225 Difference]: With dead ends: 112 [2023-11-06 22:49:36,564 INFO L226 Difference]: Without dead ends: 108 [2023-11-06 22:49:36,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:36,571 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:36,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-06 22:49:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2023-11-06 22:49:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.6779661016949152) internal successors, (99), 78 states have internal predecessors, (99), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-06 22:49:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2023-11-06 22:49:36,681 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 6 [2023-11-06 22:49:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:36,682 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-06 22:49:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2023-11-06 22:49:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:49:36,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:36,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:49:36,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-06 22:49:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:36,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:36,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash -742866943, now seen corresponding path program 1 times [2023-11-06 22:49:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:36,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694777291] [2023-11-06 22:49:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:36,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:36,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:36,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:36,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:49:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:36,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:49:36,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:37,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:37,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694777291] [2023-11-06 22:49:37,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694777291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:37,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:37,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:49:37,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963794314] [2023-11-06 22:49:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:37,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:37,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:37,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:37,103 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:37,346 INFO L93 Difference]: Finished difference Result 210 states and 282 transitions. [2023-11-06 22:49:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:49:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:37,350 INFO L225 Difference]: With dead ends: 210 [2023-11-06 22:49:37,350 INFO L226 Difference]: Without dead ends: 210 [2023-11-06 22:49:37,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:49:37,352 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 125 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:37,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 144 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-06 22:49:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2023-11-06 22:49:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.7154471544715446) internal successors, (211), 142 states have internal predecessors, (211), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-06 22:49:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 242 transitions. [2023-11-06 22:49:37,378 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 242 transitions. Word has length 6 [2023-11-06 22:49:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:37,378 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 242 transitions. [2023-11-06 22:49:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 242 transitions. [2023-11-06 22:49:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:49:37,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:37,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:37,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:37,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:37,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1554038803, now seen corresponding path program 1 times [2023-11-06 22:49:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514618035] [2023-11-06 22:49:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:37,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:37,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:37,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:49:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:37,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:49:37,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:37,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:37,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514618035] [2023-11-06 22:49:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514618035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:37,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332260671] [2023-11-06 22:49:37,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:37,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:37,845 INFO L87 Difference]: Start difference. First operand 156 states and 242 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:38,197 INFO L93 Difference]: Finished difference Result 232 states and 329 transitions. [2023-11-06 22:49:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:49:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:38,201 INFO L225 Difference]: With dead ends: 232 [2023-11-06 22:49:38,201 INFO L226 Difference]: Without dead ends: 232 [2023-11-06 22:49:38,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:38,203 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:38,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 179 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:49:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-06 22:49:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 159. [2023-11-06 22:49:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.6984126984126984) internal successors, (214), 145 states have internal predecessors, (214), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-06 22:49:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 245 transitions. [2023-11-06 22:49:38,224 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 245 transitions. Word has length 7 [2023-11-06 22:49:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:38,225 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 245 transitions. [2023-11-06 22:49:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 245 transitions. [2023-11-06 22:49:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:49:38,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:38,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:38,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:38,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:38,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash -930562592, now seen corresponding path program 1 times [2023-11-06 22:49:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:38,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821081242] [2023-11-06 22:49:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:38,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:38,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:49:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:38,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:49:38,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:38,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:38,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821081242] [2023-11-06 22:49:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821081242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:38,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:38,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391480237] [2023-11-06 22:49:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:38,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:38,783 INFO L87 Difference]: Start difference. First operand 159 states and 245 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:39,122 INFO L93 Difference]: Finished difference Result 212 states and 283 transitions. [2023-11-06 22:49:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:49:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:39,125 INFO L225 Difference]: With dead ends: 212 [2023-11-06 22:49:39,125 INFO L226 Difference]: Without dead ends: 212 [2023-11-06 22:49:39,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:39,127 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 94 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:39,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 211 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:49:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-06 22:49:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 159. [2023-11-06 22:49:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.6825396825396826) internal successors, (212), 145 states have internal predecessors, (212), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-06 22:49:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2023-11-06 22:49:39,144 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 8 [2023-11-06 22:49:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2023-11-06 22:49:39,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2023-11-06 22:49:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:49:39,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:39,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:39,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:39,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:39,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1217330767, now seen corresponding path program 1 times [2023-11-06 22:49:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5905588] [2023-11-06 22:49:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:39,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:39,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:49:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:49:39,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:39,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:39,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5905588] [2023-11-06 22:49:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5905588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:39,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:39,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514410865] [2023-11-06 22:49:39,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:39,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:39,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:39,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:39,487 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:39,679 INFO L93 Difference]: Finished difference Result 239 states and 326 transitions. [2023-11-06 22:49:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:49:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:39,682 INFO L225 Difference]: With dead ends: 239 [2023-11-06 22:49:39,683 INFO L226 Difference]: Without dead ends: 239 [2023-11-06 22:49:39,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:39,684 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 177 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 174 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-06 22:49:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 196. [2023-11-06 22:49:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 161 states have (on average 1.6335403726708075) internal successors, (263), 181 states have internal predecessors, (263), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-06 22:49:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2023-11-06 22:49:39,700 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 9 [2023-11-06 22:49:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:39,700 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2023-11-06 22:49:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2023-11-06 22:49:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:49:39,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:39,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:39,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:39,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:39,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:39,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash -917451838, now seen corresponding path program 1 times [2023-11-06 22:49:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396552204] [2023-11-06 22:49:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:39,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:39,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:49:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:49:40,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:40,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:40,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396552204] [2023-11-06 22:49:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396552204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:40,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448495689] [2023-11-06 22:49:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:40,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:40,134 INFO L87 Difference]: Start difference. First operand 196 states and 294 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:40,412 INFO L93 Difference]: Finished difference Result 236 states and 309 transitions. [2023-11-06 22:49:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:40,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 22:49:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:40,416 INFO L225 Difference]: With dead ends: 236 [2023-11-06 22:49:40,416 INFO L226 Difference]: Without dead ends: 236 [2023-11-06 22:49:40,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:40,419 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 125 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:40,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 208 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-06 22:49:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 206. [2023-11-06 22:49:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 170 states have (on average 1.6235294117647059) internal successors, (276), 191 states have internal predecessors, (276), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-06 22:49:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 307 transitions. [2023-11-06 22:49:40,443 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 307 transitions. Word has length 10 [2023-11-06 22:49:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:40,443 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 307 transitions. [2023-11-06 22:49:40,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 307 transitions. [2023-11-06 22:49:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:49:40,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:40,445 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:40,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-06 22:49:40,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:40,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:40,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -657083128, now seen corresponding path program 1 times [2023-11-06 22:49:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815138512] [2023-11-06 22:49:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:40,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:49:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:49:40,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:40,938 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 22:49:40,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:41,327 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 22:49:41,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:41,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815138512] [2023-11-06 22:49:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815138512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:41,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:49:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779779825] [2023-11-06 22:49:41,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:49:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:49:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:41,330 INFO L87 Difference]: Start difference. First operand 206 states and 307 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:41,949 INFO L93 Difference]: Finished difference Result 372 states and 500 transitions. [2023-11-06 22:49:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 22:49:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:41,958 INFO L225 Difference]: With dead ends: 372 [2023-11-06 22:49:41,958 INFO L226 Difference]: Without dead ends: 372 [2023-11-06 22:49:41,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:41,960 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 281 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:41,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 324 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:49:41,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-06 22:49:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 244. [2023-11-06 22:49:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 205 states have (on average 1.604878048780488) internal successors, (329), 229 states have internal predecessors, (329), 9 states have call successors, (9), 5 states have call predecessors, (9), 10 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-06 22:49:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 368 transitions. [2023-11-06 22:49:41,988 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 368 transitions. Word has length 14 [2023-11-06 22:49:41,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:41,989 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 368 transitions. [2023-11-06 22:49:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 368 transitions. [2023-11-06 22:49:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:49:41,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:41,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:42,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:42,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:42,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:42,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1105259462, now seen corresponding path program 1 times [2023-11-06 22:49:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093336291] [2023-11-06 22:49:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:42,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:42,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:49:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:42,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:49:42,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:42,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:42,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093336291] [2023-11-06 22:49:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093336291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:42,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:42,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:49:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178941108] [2023-11-06 22:49:42,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:42,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:49:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:49:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:42,762 INFO L87 Difference]: Start difference. First operand 244 states and 368 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:43,480 INFO L93 Difference]: Finished difference Result 410 states and 572 transitions. [2023-11-06 22:49:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:49:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 22:49:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:43,485 INFO L225 Difference]: With dead ends: 410 [2023-11-06 22:49:43,485 INFO L226 Difference]: Without dead ends: 410 [2023-11-06 22:49:43,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:49:43,487 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 213 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:43,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 382 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:49:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-06 22:49:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2023-11-06 22:49:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 215 states have (on average 1.6) internal successors, (344), 239 states have internal predecessors, (344), 9 states have call successors, (9), 5 states have call predecessors, (9), 10 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-06 22:49:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2023-11-06 22:49:43,505 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 15 [2023-11-06 22:49:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:43,506 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2023-11-06 22:49:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2023-11-06 22:49:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:49:43,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:43,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:43,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:43,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:43,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -96695001, now seen corresponding path program 1 times [2023-11-06 22:49:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950919866] [2023-11-06 22:49:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:43,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:43,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:43,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:43,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:49:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:49:43,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:44,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:44,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950919866] [2023-11-06 22:49:44,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950919866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:44,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:44,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:49:44,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629808388] [2023-11-06 22:49:44,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:44,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:49:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:49:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:44,473 INFO L87 Difference]: Start difference. First operand 254 states and 383 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:46,261 INFO L93 Difference]: Finished difference Result 635 states and 850 transitions. [2023-11-06 22:49:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:49:46,266 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 22:49:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:46,271 INFO L225 Difference]: With dead ends: 635 [2023-11-06 22:49:46,272 INFO L226 Difference]: Without dead ends: 635 [2023-11-06 22:49:46,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:49:46,273 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 545 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 496 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:49:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-11-06 22:49:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 372. [2023-11-06 22:49:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 353 states have internal predecessors, (526), 11 states have call successors, (11), 7 states have call predecessors, (11), 16 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) [2023-11-06 22:49:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 584 transitions. [2023-11-06 22:49:46,308 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 584 transitions. Word has length 16 [2023-11-06 22:49:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 584 transitions. [2023-11-06 22:49:46,309 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 584 transitions. [2023-11-06 22:49:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:49:46,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:46,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:46,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:46,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:46,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:46,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1930496503, now seen corresponding path program 1 times [2023-11-06 22:49:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:46,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026032288] [2023-11-06 22:49:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:46,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:46,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:46,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:49:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:46,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:49:46,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:46,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:46,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:46,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026032288] [2023-11-06 22:49:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026032288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:46,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:46,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:49:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272265072] [2023-11-06 22:49:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:46,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,737 INFO L87 Difference]: Start difference. First operand 372 states and 584 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:46,781 INFO L93 Difference]: Finished difference Result 390 states and 568 transitions. [2023-11-06 22:49:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 22:49:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:46,785 INFO L225 Difference]: With dead ends: 390 [2023-11-06 22:49:46,786 INFO L226 Difference]: Without dead ends: 390 [2023-11-06 22:49:46,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,787 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:46,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-06 22:49:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2023-11-06 22:49:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 326 states have (on average 1.549079754601227) internal successors, (505), 355 states have internal predecessors, (505), 11 states have call successors, (11), 8 states have call predecessors, (11), 18 states have return successors, (43), 11 states have call predecessors, (43), 11 states have call successors, (43) [2023-11-06 22:49:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 559 transitions. [2023-11-06 22:49:46,834 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 559 transitions. Word has length 18 [2023-11-06 22:49:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:46,835 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 559 transitions. [2023-11-06 22:49:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 559 transitions. [2023-11-06 22:49:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:49:46,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:46,840 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:49:46,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:47,054 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:47,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1911770353, now seen corresponding path program 2 times [2023-11-06 22:49:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:47,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205131874] [2023-11-06 22:49:47,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:47,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:47,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:47,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:47,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:49:47,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:49:47,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:47,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:49:47,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:47,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:48,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:48,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205131874] [2023-11-06 22:49:48,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205131874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:48,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:48,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:49:48,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809461389] [2023-11-06 22:49:48,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:48,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:49:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:49:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:48,497 INFO L87 Difference]: Start difference. First operand 375 states and 559 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:50,679 INFO L93 Difference]: Finished difference Result 618 states and 876 transitions. [2023-11-06 22:49:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:49:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-06 22:49:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:50,686 INFO L225 Difference]: With dead ends: 618 [2023-11-06 22:49:50,686 INFO L226 Difference]: Without dead ends: 618 [2023-11-06 22:49:50,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:49:50,688 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 266 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:50,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 467 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:49:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-06 22:49:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 408. [2023-11-06 22:49:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 361 states have (on average 1.6011080332409973) internal successors, (578), 388 states have internal predecessors, (578), 11 states have call successors, (11), 8 states have call predecessors, (11), 16 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2023-11-06 22:49:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 624 transitions. [2023-11-06 22:49:50,716 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 624 transitions. Word has length 22 [2023-11-06 22:49:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:50,717 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 624 transitions. [2023-11-06 22:49:50,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 624 transitions. [2023-11-06 22:49:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:49:50,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:50,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:50,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:50,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:50,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -487174678, now seen corresponding path program 1 times [2023-11-06 22:49:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:50,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548715420] [2023-11-06 22:49:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:50,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:50,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:50,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:50,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:49:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:49:51,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:51,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:51,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548715420] [2023-11-06 22:49:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548715420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:51,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403938085] [2023-11-06 22:49:51,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:51,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:51,081 INFO L87 Difference]: Start difference. First operand 408 states and 624 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:51,092 INFO L93 Difference]: Finished difference Result 307 states and 460 transitions. [2023-11-06 22:49:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-06 22:49:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:51,096 INFO L225 Difference]: With dead ends: 307 [2023-11-06 22:49:51,097 INFO L226 Difference]: Without dead ends: 307 [2023-11-06 22:49:51,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:51,099 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:51,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-06 22:49:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-06 22:49:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 268 states have (on average 1.6007462686567164) internal successors, (429), 292 states have internal predecessors, (429), 8 states have call successors, (8), 6 states have call predecessors, (8), 11 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-11-06 22:49:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 460 transitions. [2023-11-06 22:49:51,118 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 460 transitions. Word has length 25 [2023-11-06 22:49:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:51,118 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 460 transitions. [2023-11-06 22:49:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 460 transitions. [2023-11-06 22:49:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:49:51,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:51,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:51,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-06 22:49:51,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:51,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:49:51,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1487790830, now seen corresponding path program 1 times [2023-11-06 22:49:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945813440] [2023-11-06 22:49:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:51,346 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:51,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:49:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:49:51,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:49:52,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:49:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:52,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:54,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945813440] [2023-11-06 22:49:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945813440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030542479] [2023-11-06 22:49:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:49:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:49:54,686 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:49:54,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-06 22:49:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:54,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:49:54,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:49:55,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:49:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:55,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1030542479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:55,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:55,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-06 22:49:55,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41520640] [2023-11-06 22:49:55,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2023-11-06 22:49:55,768 INFO L87 Difference]: Start difference. First operand 307 states and 460 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:49:58,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:00,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:00,619 INFO L93 Difference]: Finished difference Result 442 states and 600 transitions. [2023-11-06 22:50:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:50:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-06 22:50:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:00,623 INFO L225 Difference]: With dead ends: 442 [2023-11-06 22:50:00,624 INFO L226 Difference]: Without dead ends: 442 [2023-11-06 22:50:00,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=134, Invalid=285, Unknown=1, NotChecked=0, Total=420 [2023-11-06 22:50:00,625 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 273 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:00,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 126 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 127 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:50:00,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-06 22:50:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 320. [2023-11-06 22:50:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 281 states have (on average 1.4875444839857652) internal successors, (418), 305 states have internal predecessors, (418), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-06 22:50:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 452 transitions. [2023-11-06 22:50:00,643 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 452 transitions. Word has length 27 [2023-11-06 22:50:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 452 transitions. [2023-11-06 22:50:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 452 transitions. [2023-11-06 22:50:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:50:00,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:00,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:00,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:00,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:01,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:01,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -692402736, now seen corresponding path program 1 times [2023-11-06 22:50:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691058550] [2023-11-06 22:50:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:01,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:01,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:01,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:50:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:01,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:50:01,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:01,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:01,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691058550] [2023-11-06 22:50:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691058550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:01,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-06 22:50:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323638820] [2023-11-06 22:50:01,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:01,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:50:01,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:01,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:50:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:50:01,546 INFO L87 Difference]: Start difference. First operand 320 states and 452 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:50:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:02,020 INFO L93 Difference]: Finished difference Result 454 states and 588 transitions. [2023-11-06 22:50:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:50:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-06 22:50:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:02,024 INFO L225 Difference]: With dead ends: 454 [2023-11-06 22:50:02,025 INFO L226 Difference]: Without dead ends: 454 [2023-11-06 22:50:02,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:50:02,026 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 323 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:02,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 270 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:50:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-06 22:50:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 405. [2023-11-06 22:50:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 363 states have (on average 1.4325068870523416) internal successors, (520), 388 states have internal predecessors, (520), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 553 transitions. [2023-11-06 22:50:02,047 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 553 transitions. Word has length 28 [2023-11-06 22:50:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:02,050 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 553 transitions. [2023-11-06 22:50:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:50:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 553 transitions. [2023-11-06 22:50:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:50:02,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:02,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:02,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:02,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:02,272 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:02,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash 10351713, now seen corresponding path program 1 times [2023-11-06 22:50:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472758002] [2023-11-06 22:50:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:02,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:02,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:02,274 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:02,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:50:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:02,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:50:02,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:02,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:02,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472758002] [2023-11-06 22:50:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472758002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:02,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:50:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822362804] [2023-11-06 22:50:02,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:50:02,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:50:02,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:50:02,856 INFO L87 Difference]: Start difference. First operand 405 states and 553 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:50:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:03,495 INFO L93 Difference]: Finished difference Result 436 states and 559 transitions. [2023-11-06 22:50:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:50:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-06 22:50:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:03,500 INFO L225 Difference]: With dead ends: 436 [2023-11-06 22:50:03,500 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:50:03,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:50:03,502 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 386 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:03,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 235 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:50:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:50:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 415. [2023-11-06 22:50:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 372 states have (on average 1.4005376344086022) internal successors, (521), 398 states have internal predecessors, (521), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 554 transitions. [2023-11-06 22:50:03,533 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 554 transitions. Word has length 29 [2023-11-06 22:50:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:03,533 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 554 transitions. [2023-11-06 22:50:03,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:50:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 554 transitions. [2023-11-06 22:50:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:50:03,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:03,536 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:03,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:03,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:03,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -457123443, now seen corresponding path program 1 times [2023-11-06 22:50:03,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737245800] [2023-11-06 22:50:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:03,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:03,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:03,753 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:03,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:50:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:50:03,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:04,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:50:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:04,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:07,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:07,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737245800] [2023-11-06 22:50:07,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737245800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:07,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [759697913] [2023-11-06 22:50:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,166 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:07,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:50:07,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:50:07,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-06 22:50:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:07,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:50:07,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:08,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:08,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:50:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [759697913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:12,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2023-11-06 22:50:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950355948] [2023-11-06 22:50:12,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:12,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:50:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:50:12,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2023-11-06 22:50:12,140 INFO L87 Difference]: Start difference. First operand 415 states and 554 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:14,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:17,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:17,735 INFO L93 Difference]: Finished difference Result 570 states and 738 transitions. [2023-11-06 22:50:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:50:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-06 22:50:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:17,740 INFO L225 Difference]: With dead ends: 570 [2023-11-06 22:50:17,741 INFO L226 Difference]: Without dead ends: 570 [2023-11-06 22:50:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=219, Invalid=536, Unknown=1, NotChecked=0, Total=756 [2023-11-06 22:50:17,742 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 357 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 175 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:50:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-06 22:50:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 415. [2023-11-06 22:50:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 372 states have (on average 1.3870967741935485) internal successors, (516), 398 states have internal predecessors, (516), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2023-11-06 22:50:17,769 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 29 [2023-11-06 22:50:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:17,770 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2023-11-06 22:50:17,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2023-11-06 22:50:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:50:17,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:17,772 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:17,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-11-06 22:50:17,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:18,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:18,176 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:18,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash -219964683, now seen corresponding path program 1 times [2023-11-06 22:50:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:18,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188062177] [2023-11-06 22:50:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:18,178 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:18,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:50:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:18,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:50:18,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:18,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:18,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:50:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:19,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:19,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:19,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188062177] [2023-11-06 22:50:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188062177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1256654216] [2023-11-06 22:50:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:19,881 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:50:19,883 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:50:19,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-06 22:50:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:50:20,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:20,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:20,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:50:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:20,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1256654216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:21,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:21,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-06 22:50:21,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134959125] [2023-11-06 22:50:21,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:50:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:50:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:50:21,332 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:23,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:26,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:28,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:28,938 INFO L93 Difference]: Finished difference Result 686 states and 873 transitions. [2023-11-06 22:50:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:50:28,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-06 22:50:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:28,942 INFO L225 Difference]: With dead ends: 686 [2023-11-06 22:50:28,943 INFO L226 Difference]: Without dead ends: 686 [2023-11-06 22:50:28,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:50:28,944 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 461 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 71 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:28,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 238 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 226 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2023-11-06 22:50:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-06 22:50:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 415. [2023-11-06 22:50:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 372 states have (on average 1.3548387096774193) internal successors, (504), 398 states have internal predecessors, (504), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 537 transitions. [2023-11-06 22:50:28,963 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 537 transitions. Word has length 35 [2023-11-06 22:50:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:28,964 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 537 transitions. [2023-11-06 22:50:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 537 transitions. [2023-11-06 22:50:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:50:28,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:28,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:28,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-06 22:50:29,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:29,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:29,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:29,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2138169994, now seen corresponding path program 1 times [2023-11-06 22:50:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851004699] [2023-11-06 22:50:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:29,379 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:29,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:50:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:29,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:50:29,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:29,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-11-06 22:50:29,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:50:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:29,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:30,959 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-06 22:50:30,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26 [2023-11-06 22:50:30,968 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:50:30,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-11-06 22:50:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:31,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851004699] [2023-11-06 22:50:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851004699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:31,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-06 22:50:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784745773] [2023-11-06 22:50:31,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:50:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:50:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:50:31,004 INFO L87 Difference]: Start difference. First operand 415 states and 537 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:31,454 INFO L93 Difference]: Finished difference Result 494 states and 624 transitions. [2023-11-06 22:50:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-06 22:50:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:31,457 INFO L225 Difference]: With dead ends: 494 [2023-11-06 22:50:31,458 INFO L226 Difference]: Without dead ends: 494 [2023-11-06 22:50:31,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:50:31,459 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 135 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:31,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 369 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:50:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-06 22:50:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 433. [2023-11-06 22:50:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 390 states have (on average 1.3384615384615384) internal successors, (522), 416 states have internal predecessors, (522), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 555 transitions. [2023-11-06 22:50:31,474 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 555 transitions. Word has length 39 [2023-11-06 22:50:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:31,474 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 555 transitions. [2023-11-06 22:50:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 555 transitions. [2023-11-06 22:50:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:50:31,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:31,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:31,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:31,688 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:31,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1858113804, now seen corresponding path program 1 times [2023-11-06 22:50:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177474120] [2023-11-06 22:50:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:31,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:31,690 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:31,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:50:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:50:31,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:31,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:31,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177474120] [2023-11-06 22:50:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177474120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:31,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-06 22:50:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803522447] [2023-11-06 22:50:31,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:50:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:50:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:50:31,923 INFO L87 Difference]: Start difference. First operand 433 states and 555 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:31,957 INFO L93 Difference]: Finished difference Result 431 states and 551 transitions. [2023-11-06 22:50:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:50:31,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-06 22:50:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:31,961 INFO L225 Difference]: With dead ends: 431 [2023-11-06 22:50:31,961 INFO L226 Difference]: Without dead ends: 431 [2023-11-06 22:50:31,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:50:31,962 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 48 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:31,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 104 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:50:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-06 22:50:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2023-11-06 22:50:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 390 states have (on average 1.3282051282051281) internal successors, (518), 414 states have internal predecessors, (518), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-06 22:50:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 551 transitions. [2023-11-06 22:50:31,977 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 551 transitions. Word has length 40 [2023-11-06 22:50:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:31,977 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 551 transitions. [2023-11-06 22:50:31,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 551 transitions. [2023-11-06 22:50:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:50:31,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:31,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:31,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:32,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:32,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:32,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:32,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1766952978, now seen corresponding path program 1 times [2023-11-06 22:50:32,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611877931] [2023-11-06 22:50:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:32,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:32,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:32,199 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:32,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:50:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:32,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:50:32,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:32,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:32,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:32,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611877931] [2023-11-06 22:50:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611877931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:32,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:32,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:50:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98389410] [2023-11-06 22:50:32,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:32,733 INFO L87 Difference]: Start difference. First operand 431 states and 551 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:50:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:32,948 INFO L93 Difference]: Finished difference Result 378 states and 468 transitions. [2023-11-06 22:50:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:50:32,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-06 22:50:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:32,952 INFO L225 Difference]: With dead ends: 378 [2023-11-06 22:50:32,952 INFO L226 Difference]: Without dead ends: 378 [2023-11-06 22:50:32,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 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 22:50:32,953 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 89 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 149 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:50:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-06 22:50:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 356. [2023-11-06 22:50:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 323 states have (on average 1.3188854489164086) internal successors, (426), 341 states have internal predecessors, (426), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-06 22:50:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 449 transitions. [2023-11-06 22:50:32,967 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 449 transitions. Word has length 41 [2023-11-06 22:50:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 449 transitions. [2023-11-06 22:50:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:50:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 449 transitions. [2023-11-06 22:50:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:50:32,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:32,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:32,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:33,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:33,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:33,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1059032630, now seen corresponding path program 1 times [2023-11-06 22:50:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:33,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061881225] [2023-11-06 22:50:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:33,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:33,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:33,184 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:33,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:50:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:33,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:50:33,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:33,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:50:33,475 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:50:33,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:50:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:33,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:33,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061881225] [2023-11-06 22:50:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061881225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:33,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-06 22:50:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592621204] [2023-11-06 22:50:33,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:50:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:50:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:50:33,658 INFO L87 Difference]: Start difference. First operand 356 states and 449 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:33,875 INFO L93 Difference]: Finished difference Result 383 states and 468 transitions. [2023-11-06 22:50:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:50:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-11-06 22:50:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:33,878 INFO L225 Difference]: With dead ends: 383 [2023-11-06 22:50:33,878 INFO L226 Difference]: Without dead ends: 383 [2023-11-06 22:50:33,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:50:33,879 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 146 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:50:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-06 22:50:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 364. [2023-11-06 22:50:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 331 states have (on average 1.311178247734139) internal successors, (434), 349 states have internal predecessors, (434), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-06 22:50:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 457 transitions. [2023-11-06 22:50:33,893 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 457 transitions. Word has length 42 [2023-11-06 22:50:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:33,893 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 457 transitions. [2023-11-06 22:50:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 457 transitions. [2023-11-06 22:50:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 22:50:33,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:33,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:33,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:34,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:34,110 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:34,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:34,110 INFO L85 PathProgramCache]: Analyzing trace with hash -229956782, now seen corresponding path program 1 times [2023-11-06 22:50:34,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:34,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422584928] [2023-11-06 22:50:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:34,114 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:34,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:50:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:34,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:50:34,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:50:34,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:50:34,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422584928] [2023-11-06 22:50:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422584928] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:34,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:50:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610930128] [2023-11-06 22:50:34,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:50:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:50:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:50:34,458 INFO L87 Difference]: Start difference. First operand 364 states and 457 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:34,551 INFO L93 Difference]: Finished difference Result 365 states and 427 transitions. [2023-11-06 22:50:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:50:34,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-11-06 22:50:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:34,555 INFO L225 Difference]: With dead ends: 365 [2023-11-06 22:50:34,556 INFO L226 Difference]: Without dead ends: 365 [2023-11-06 22:50:34,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:50:34,557 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 127 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:34,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 255 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:50:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-06 22:50:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 313. [2023-11-06 22:50:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 283 states have (on average 1.2367491166077738) internal successors, (350), 298 states have internal predecessors, (350), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-06 22:50:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2023-11-06 22:50:34,572 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 44 [2023-11-06 22:50:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:34,572 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2023-11-06 22:50:34,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2023-11-06 22:50:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:50:34,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:34,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:34,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:34,789 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:34,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash 629474045, now seen corresponding path program 1 times [2023-11-06 22:50:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:34,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232642978] [2023-11-06 22:50:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:34,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:34,793 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:34,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:50:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:34,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:50:34,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:50:34,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:50:34,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:34,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232642978] [2023-11-06 22:50:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232642978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:34,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:34,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:50:34,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820895371] [2023-11-06 22:50:34,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:34,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:34,952 INFO L87 Difference]: Start difference. First operand 313 states and 373 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:34,959 INFO L93 Difference]: Finished difference Result 251 states and 287 transitions. [2023-11-06 22:50:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2023-11-06 22:50:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:34,962 INFO L225 Difference]: With dead ends: 251 [2023-11-06 22:50:34,963 INFO L226 Difference]: Without dead ends: 251 [2023-11-06 22:50:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:34,964 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:50:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-06 22:50:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-11-06 22:50:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 229 states have (on average 1.1790393013100438) internal successors, (270), 238 states have internal predecessors, (270), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-06 22:50:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 287 transitions. [2023-11-06 22:50:34,975 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 287 transitions. Word has length 47 [2023-11-06 22:50:34,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:34,975 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 287 transitions. [2023-11-06 22:50:34,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:50:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 287 transitions. [2023-11-06 22:50:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:50:34,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:34,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:34,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:35,191 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:35,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 800966878, now seen corresponding path program 1 times [2023-11-06 22:50:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650992717] [2023-11-06 22:50:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:35,197 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:35,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 22:50:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:35,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:50:35,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:35,709 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:50:35,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:50:36,612 INFO L322 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2023-11-06 22:50:36,613 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2023-11-06 22:50:36,913 INFO L322 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2023-11-06 22:50:36,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 37 [2023-11-06 22:50:36,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-11-06 22:50:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:36,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:37,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650992717] [2023-11-06 22:50:37,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650992717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697872368] [2023-11-06 22:50:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:37,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:50:37,176 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:50:37,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-06 22:50:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:37,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:50:37,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:37,829 INFO L322 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-06 22:50:37,829 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 22:50:38,161 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:50:38,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:50:38,256 INFO L322 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-06 22:50:38,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-06 22:50:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:38,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:38,506 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-06 22:50:38,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2023-11-06 22:50:41,374 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-06 22:50:41,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2023-11-06 22:50:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1697872368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:41,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:50:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 26 [2023-11-06 22:50:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672130056] [2023-11-06 22:50:41,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:50:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:50:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=662, Unknown=1, NotChecked=0, Total=812 [2023-11-06 22:50:41,893 INFO L87 Difference]: Start difference. First operand 251 states and 287 transitions. Second operand has 28 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:50:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:43,332 INFO L93 Difference]: Finished difference Result 253 states and 289 transitions. [2023-11-06 22:50:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:50:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 51 [2023-11-06 22:50:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:43,336 INFO L225 Difference]: With dead ends: 253 [2023-11-06 22:50:43,336 INFO L226 Difference]: Without dead ends: 253 [2023-11-06 22:50:43,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=378, Invalid=1103, Unknown=1, NotChecked=0, Total=1482 [2023-11-06 22:50:43,338 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 206 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:43,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 165 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:50:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-06 22:50:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2023-11-06 22:50:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 229 states have (on average 1.1746724890829694) internal successors, (269), 237 states have internal predecessors, (269), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-06 22:50:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 286 transitions. [2023-11-06 22:50:43,349 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 286 transitions. Word has length 51 [2023-11-06 22:50:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:43,350 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 286 transitions. [2023-11-06 22:50:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:50:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 286 transitions. [2023-11-06 22:50:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:50:43,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:43,352 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:43,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:43,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:43,765 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:43,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -26371320, now seen corresponding path program 1 times [2023-11-06 22:50:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162402448] [2023-11-06 22:50:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:43,768 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:43,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-06 22:50:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:43,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:50:43,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:44,123 WARN L861 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (select |c_#valid| |parse_input_c1_~x~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2023-11-06 22:50:44,228 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:50:44,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:50:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2023-11-06 22:50:44,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 22:50:44,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:44,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162402448] [2023-11-06 22:50:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162402448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:44,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-11-06 22:50:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120200366] [2023-11-06 22:50:44,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:44,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:50:44,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:50:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2023-11-06 22:50:44,809 INFO L87 Difference]: Start difference. First operand 250 states and 286 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:50:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:45,424 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2023-11-06 22:50:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:50:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2023-11-06 22:50:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:45,427 INFO L225 Difference]: With dead ends: 266 [2023-11-06 22:50:45,427 INFO L226 Difference]: Without dead ends: 266 [2023-11-06 22:50:45,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=265, Unknown=1, NotChecked=36, Total=420 [2023-11-06 22:50:45,428 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 203 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:45,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 176 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 140 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2023-11-06 22:50:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-06 22:50:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 250. [2023-11-06 22:50:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 229 states have (on average 1.165938864628821) internal successors, (267), 237 states have internal predecessors, (267), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-06 22:50:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 284 transitions. [2023-11-06 22:50:45,438 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 284 transitions. Word has length 52 [2023-11-06 22:50:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:45,439 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 284 transitions. [2023-11-06 22:50:45,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:50:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 284 transitions. [2023-11-06 22:50:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:50:45,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:45,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:45,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:45,656 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:45,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash -939830577, now seen corresponding path program 1 times [2023-11-06 22:50:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:45,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077666847] [2023-11-06 22:50:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:45,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:45,659 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:45,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-06 22:50:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:45,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:50:45,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:46,406 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:50:46,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:50:47,660 INFO L322 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2023-11-06 22:50:47,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2023-11-06 22:50:47,907 INFO L322 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2023-11-06 22:50:47,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 78 [2023-11-06 22:50:48,023 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-06 22:50:48,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2023-11-06 22:50:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:48,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:48,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077666847] [2023-11-06 22:50:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077666847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [200577064] [2023-11-06 22:50:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:50:48,601 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:50:48,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-11-06 22:50:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:48,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:50:48,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:49,384 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:50:49,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-06 22:50:50,315 INFO L322 Elim1Store]: treesize reduction 102, result has 23.3 percent of original size [2023-11-06 22:50:50,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 101 [2023-11-06 22:50:50,573 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-06 22:50:50,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2023-11-06 22:50:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:50,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [200577064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:55,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 18 [2023-11-06 22:50:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684477471] [2023-11-06 22:50:55,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:55,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:50:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:50:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:50:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=513, Unknown=2, NotChecked=0, Total=600 [2023-11-06 22:50:55,193 INFO L87 Difference]: Start difference. First operand 250 states and 284 transitions. Second operand has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:50:55,783 WARN L861 $PredicateComparison]: unable to prove that (and (= (bvadd (select |c_#valid| (_ bv1 32)) (_ bv1 1)) (_ bv0 1)) (= |c_#valid| (store |c_old(#valid)| c_~global~0.base (select |c_#valid| c_~global~0.base))) (= (_ bv0 1) (bvadd (select |c_old(#valid)| (_ bv1 32)) (_ bv1 1))) (= (_ bv0 1) (bvadd (select |c_#valid| (_ bv4 32)) (_ bv1 1))) (= |c_parse_input_~i~0#1| (_ bv0 32)) (= |c_~#commands~0.offset| (_ bv0 32)) (= (_ bv0 1) (select |c_old(#valid)| c_~global~0.base)) (= (_ bv0 1) (select |c_old(#valid)| |c_parse_input_c1_~x~0#1.base|)) (= (store |c_old(#valid)| |c_parse_input_c1_~x~0#1.base| (select |c_#valid| |c_parse_input_c1_~x~0#1.base|)) |c_#valid|) (not (= c_~global~0.base (_ bv1 32))) (= (select (select |c_#memory_$Pointer$.base| |c_~#commands~0.base|) (_ bv0 32)) (_ bv1 32)) (let ((.cse0 (select |c_#valid| |c_old(~global~0.base)|))) (or (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)) (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (select |c_#valid| |parse_input_c1_~x~0#1.base|)) |c_old(~global~0.base)| .cse0) |c_#valid|))) (and (= |c_#valid| (store |c_old(#valid)| |c_old(~global~0.base)| .cse0)) (= (select |c_old(#valid)| |c_old(~global~0.base)|) (_ bv0 1)))))) is different from true [2023-11-06 22:50:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:58,231 INFO L93 Difference]: Finished difference Result 302 states and 332 transitions. [2023-11-06 22:50:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:50:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2023-11-06 22:50:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:58,234 INFO L225 Difference]: With dead ends: 302 [2023-11-06 22:50:58,234 INFO L226 Difference]: Without dead ends: 302 [2023-11-06 22:50:58,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=362, Invalid=1531, Unknown=3, NotChecked=84, Total=1980 [2023-11-06 22:50:58,236 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 366 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:58,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 247 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 371 Invalid, 0 Unknown, 16 Unchecked, 1.3s Time] [2023-11-06 22:50:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-06 22:50:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2023-11-06 22:50:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 231 states have (on average 1.1601731601731602) internal successors, (268), 239 states have internal predecessors, (268), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-06 22:50:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 284 transitions. [2023-11-06 22:50:58,258 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 284 transitions. Word has length 52 [2023-11-06 22:50:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:58,258 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 284 transitions. [2023-11-06 22:50:58,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:50:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 284 transitions. [2023-11-06 22:50:58,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:50:58,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:58,261 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:58,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:58,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:58,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:58,681 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:50:58,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -817510871, now seen corresponding path program 1 times [2023-11-06 22:50:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:50:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643619121] [2023-11-06 22:50:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:58,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:50:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:50:58,684 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:50:58,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-06 22:50:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:58,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:50:58,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:59,146 WARN L861 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (select |c_#length| |parse_input_c1_~x~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2023-11-06 22:50:59,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:59,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:50:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2023-11-06 22:50:59,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:59,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:50:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643619121] [2023-11-06 22:50:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643619121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1295944249] [2023-11-06 22:50:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:59,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:59,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:50:59,554 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:50:59,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-11-06 22:50:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:59,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:50:59,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:00,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:00,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:51:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2023-11-06 22:51:00,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:00,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1295944249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:00,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:00,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-06 22:51:00,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251685749] [2023-11-06 22:51:00,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:51:00,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:51:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:51:00,505 INFO L87 Difference]: Start difference. First operand 252 states and 284 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:51:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:01,046 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2023-11-06 22:51:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:51:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2023-11-06 22:51:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:01,049 INFO L225 Difference]: With dead ends: 273 [2023-11-06 22:51:01,049 INFO L226 Difference]: Without dead ends: 273 [2023-11-06 22:51:01,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=261, Unknown=1, NotChecked=36, Total=420 [2023-11-06 22:51:01,050 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 170 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:01,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 129 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 99 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2023-11-06 22:51:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-06 22:51:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2023-11-06 22:51:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 241 states have (on average 1.1410788381742738) internal successors, (275), 248 states have internal predecessors, (275), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:51:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions. [2023-11-06 22:51:01,057 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 53 [2023-11-06 22:51:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:01,058 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 290 transitions. [2023-11-06 22:51:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:51:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions. [2023-11-06 22:51:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:51:01,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:01,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:01,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:01,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:01,460 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:51:01,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1234050895, now seen corresponding path program 1 times [2023-11-06 22:51:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453858850] [2023-11-06 22:51:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:01,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:01,462 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:01,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-06 22:51:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:01,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:51:01,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:01,844 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:51:01,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 22:51:02,341 INFO L322 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2023-11-06 22:51:02,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:51:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:02,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:03,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453858850] [2023-11-06 22:51:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453858850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273329938] [2023-11-06 22:51:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:03,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:51:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:51:03,463 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:51:03,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1e9d8c-7066-432c-9712-98b2bc2d63dc/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-11-06 22:51:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:03,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:51:03,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:04,214 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:51:04,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-06 22:51:08,442 WARN L861 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| (select |c_#valid| |c_old(~global~0.base)|)) |c_#valid|)) is different from true [2023-11-06 22:51:08,534 INFO L322 Elim1Store]: treesize reduction 46, result has 36.1 percent of original size [2023-11-06 22:51:08,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36 [2023-11-06 22:51:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-11-06 22:51:08,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273329938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:08,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-06 22:51:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395243302] [2023-11-06 22:51:08,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:51:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:51:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=4, NotChecked=42, Total=552 [2023-11-06 22:51:08,879 INFO L87 Difference]: Start difference. First operand 261 states and 290 transitions. Second operand has 20 states, 17 states have (on average 4.352941176470588) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:51:10,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:16,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:18,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:20,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:22,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:25,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:27,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:29,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:31,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:33,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:35,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:37,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:39,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:41,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:43,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:45,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:47,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:49,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:51,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:53,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:55,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:57,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:51:59,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:01,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:03,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:05,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:07,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:09,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:11,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:13,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:52:15,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]