./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:32:55,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:32:55,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:32:55,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:32:55,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:32:55,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:32:55,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:32:55,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:32:55,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:32:55,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:32:55,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:32:55,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:32:55,557 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:32:55,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:32:55,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:32:55,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:32:55,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:32:55,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:32:55,561 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:32:55,562 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:32:55,562 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:32:55,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:32:55,564 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:32:55,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:32:55,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:32:55,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:32:55,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:32:55,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:32:55,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:32:55,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:32:55,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:32:55,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:32:55,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:32:55,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:32:55,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:32:55,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:32:55,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:32:55,570 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:32:55,570 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_a72b5a22-2f12-42c8-9e45-d67b401f1def/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-06 22:32:55,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:32:55,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:32:55,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:32:55,862 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:32:55,863 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:32:55,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:32:59,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:32:59,422 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:32:59,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:32:59,439 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/1fb23c85c/c26af308175e4c50a20f43873ea0236c/FLAG1cb006df2 [2023-11-06 22:32:59,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/1fb23c85c/c26af308175e4c50a20f43873ea0236c [2023-11-06 22:32:59,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:32:59,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:32:59,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:32:59,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:32:59,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:32:59,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399478bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59, skipping insertion in model container [2023-11-06 22:32:59,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,555 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:32:59,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:32:59,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:33:00,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:33:00,064 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:33:00,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00 WrapperNode [2023-11-06 22:33:00,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:33:00,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:00,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:33:00,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:33:00,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,119 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2023-11-06 22:33:00,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:00,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:33:00,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:33:00,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:33:00,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:33:00,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:33:00,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:33:00,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:33:00,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (1/1) ... [2023-11-06 22:33:00,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:33:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:00,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:33:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:33:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:33:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-06 22:33:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-06 22:33:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:33:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:33:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:33:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:33:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:33:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:33:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:33:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:33:00,423 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:33:00,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:33:00,746 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:33:00,754 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:33:00,755 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:33:00,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:00 BoogieIcfgContainer [2023-11-06 22:33:00,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:33:00,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:33:00,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:33:00,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:33:00,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:32:59" (1/3) ... [2023-11-06 22:33:00,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f5a90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:00, skipping insertion in model container [2023-11-06 22:33:00,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:00" (2/3) ... [2023-11-06 22:33:00,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f5a90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:00, skipping insertion in model container [2023-11-06 22:33:00,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:00" (3/3) ... [2023-11-06 22:33:00,770 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-06 22:33:00,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:33:00,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:33:00,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:33:00,867 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;@12e1b10a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:33:00,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:33:00,872 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 22:33:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:33:00,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:00,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:33:00,881 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 22:33:00,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -742866944, now seen corresponding path program 1 times [2023-11-06 22:33:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024562843] [2023-11-06 22:33:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:01,376 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 22:33:01,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024562843] [2023-11-06 22:33:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024562843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:01,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:01,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598772733] [2023-11-06 22:33:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:01,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:01,457 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 22:33:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:01,706 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2023-11-06 22:33:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:01,711 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 22:33:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:01,728 INFO L225 Difference]: With dead ends: 127 [2023-11-06 22:33:01,729 INFO L226 Difference]: Without dead ends: 121 [2023-11-06 22:33:01,732 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 22:33:01,737 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:01,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 124 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:33:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-06 22:33:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2023-11-06 22:33:01,803 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 22:33:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-11-06 22:33:01,810 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 6 [2023-11-06 22:33:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:01,811 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-11-06 22:33:01,811 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 22:33:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-11-06 22:33:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:33:01,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:01,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:33:01,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:33:01,813 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 22:33:01,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash -742866943, now seen corresponding path program 1 times [2023-11-06 22:33:01,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592036874] [2023-11-06 22:33:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:02,055 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 22:33:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592036874] [2023-11-06 22:33:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592036874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:02,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30530527] [2023-11-06 22:33:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:02,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:02,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:02,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:02,060 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 22:33:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:02,223 INFO L93 Difference]: Finished difference Result 226 states and 313 transitions. [2023-11-06 22:33:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:02,224 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 22:33:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:02,228 INFO L225 Difference]: With dead ends: 226 [2023-11-06 22:33:02,228 INFO L226 Difference]: Without dead ends: 226 [2023-11-06 22:33:02,229 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 22:33:02,231 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 22:33:02,231 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 22:33:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-06 22:33:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 173. [2023-11-06 22:33:02,265 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 22:33:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 266 transitions. [2023-11-06 22:33:02,269 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 266 transitions. Word has length 6 [2023-11-06 22:33:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:02,270 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 266 transitions. [2023-11-06 22:33:02,270 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 22:33:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 266 transitions. [2023-11-06 22:33:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:33:02,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:02,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:02,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:33:02,272 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 22:33:02,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1554038803, now seen corresponding path program 1 times [2023-11-06 22:33:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751775999] [2023-11-06 22:33:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:02,683 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 22:33:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751775999] [2023-11-06 22:33:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751775999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:02,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:02,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149714184] [2023-11-06 22:33:02,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:02,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:02,690 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 22:33:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:02,973 INFO L93 Difference]: Finished difference Result 249 states and 353 transitions. [2023-11-06 22:33:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:02,975 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 22:33:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:02,979 INFO L225 Difference]: With dead ends: 249 [2023-11-06 22:33:02,979 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 22:33:02,979 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 22:33:02,981 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 136 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 22:33:02,982 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 22:33:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 22:33:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 176. [2023-11-06 22:33:03,036 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 22:33:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 269 transitions. [2023-11-06 22:33:03,041 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 269 transitions. Word has length 7 [2023-11-06 22:33:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:03,041 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 269 transitions. [2023-11-06 22:33:03,041 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 22:33:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 269 transitions. [2023-11-06 22:33:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:33:03,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:03,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:03,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:33:03,043 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 22:33:03,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -930562592, now seen corresponding path program 1 times [2023-11-06 22:33:03,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:03,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643313191] [2023-11-06 22:33:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:03,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:03,459 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 22:33:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643313191] [2023-11-06 22:33:03,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643313191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:03,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:03,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:03,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114393038] [2023-11-06 22:33:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:03,464 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 22:33:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:03,662 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2023-11-06 22:33:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:03,663 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 22:33:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:03,666 INFO L225 Difference]: With dead ends: 228 [2023-11-06 22:33:03,667 INFO L226 Difference]: Without dead ends: 228 [2023-11-06 22:33:03,667 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 22:33:03,669 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:03,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 207 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:33:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-06 22:33:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 176. [2023-11-06 22:33:03,686 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 22:33:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 267 transitions. [2023-11-06 22:33:03,691 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 267 transitions. Word has length 8 [2023-11-06 22:33:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:03,691 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 267 transitions. [2023-11-06 22:33:03,692 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 22:33:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 267 transitions. [2023-11-06 22:33:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:33:03,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:03,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:03,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:33:03,693 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 22:33:03,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1217330767, now seen corresponding path program 1 times [2023-11-06 22:33:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718841762] [2023-11-06 22:33:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:03,787 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 22:33:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718841762] [2023-11-06 22:33:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718841762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:03,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957242153] [2023-11-06 22:33:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:03,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:03,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:03,792 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 22:33:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:03,943 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2023-11-06 22:33:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:03,944 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 22:33:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:03,946 INFO L225 Difference]: With dead ends: 256 [2023-11-06 22:33:03,947 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 22:33:03,947 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 22:33:03,949 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 22:33:03,950 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 22:33:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 22:33:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 213. [2023-11-06 22:33:03,966 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 22:33:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 318 transitions. [2023-11-06 22:33:03,970 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 318 transitions. Word has length 9 [2023-11-06 22:33:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:03,971 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 318 transitions. [2023-11-06 22:33:03,972 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 22:33:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 318 transitions. [2023-11-06 22:33:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:33:03,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:03,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:33:03,973 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 22:33:03,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash -917451838, now seen corresponding path program 1 times [2023-11-06 22:33:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:03,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902340944] [2023-11-06 22:33:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:04,090 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 22:33:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902340944] [2023-11-06 22:33:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902340944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:04,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:04,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:04,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413930754] [2023-11-06 22:33:04,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:04,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:04,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:04,094 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 22:33:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:04,239 INFO L93 Difference]: Finished difference Result 251 states and 333 transitions. [2023-11-06 22:33:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:04,240 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 22:33:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:04,243 INFO L225 Difference]: With dead ends: 251 [2023-11-06 22:33:04,244 INFO L226 Difference]: Without dead ends: 251 [2023-11-06 22:33:04,244 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 22:33:04,245 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 22:33:04,246 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 22:33:04,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-06 22:33:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 223. [2023-11-06 22:33:04,257 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 22:33:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 331 transitions. [2023-11-06 22:33:04,261 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 331 transitions. Word has length 10 [2023-11-06 22:33:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:04,261 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 331 transitions. [2023-11-06 22:33:04,261 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 22:33:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 331 transitions. [2023-11-06 22:33:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:33:04,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:04,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:04,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:33:04,263 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 22:33:04,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash -657083128, now seen corresponding path program 1 times [2023-11-06 22:33:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475263521] [2023-11-06 22:33:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:04,459 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 22:33:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475263521] [2023-11-06 22:33:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475263521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756039030] [2023-11-06 22:33:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:04,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:04,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:04,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:04,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:33:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:04,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:33:04,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:04,897 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 22:33:04,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:05,053 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 22:33:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756039030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:05,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-11-06 22:33:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910296741] [2023-11-06 22:33:05,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:33:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:33:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:33:05,057 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 22:33:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:05,417 INFO L93 Difference]: Finished difference Result 308 states and 421 transitions. [2023-11-06 22:33:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:33:05,418 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 22:33:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:05,426 INFO L225 Difference]: With dead ends: 308 [2023-11-06 22:33:05,426 INFO L226 Difference]: Without dead ends: 308 [2023-11-06 22:33:05,427 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 22:33:05,432 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:05,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 475 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:33:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-06 22:33:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2023-11-06 22:33:05,458 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 22:33:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 341 transitions. [2023-11-06 22:33:05,462 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 341 transitions. Word has length 14 [2023-11-06 22:33:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:05,463 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 341 transitions. [2023-11-06 22:33:05,463 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 22:33:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 341 transitions. [2023-11-06 22:33:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:33:05,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:05,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:05,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:05,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:05,673 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 22:33:05,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1105259462, now seen corresponding path program 1 times [2023-11-06 22:33:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317401793] [2023-11-06 22:33:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,862 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 22:33:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317401793] [2023-11-06 22:33:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317401793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070635769] [2023-11-06 22:33:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:05,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:05,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:33:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:33:05,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:06,184 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 22:33:06,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:06,283 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 22:33:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070635769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:06,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:06,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-11-06 22:33:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388364371] [2023-11-06 22:33:06,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:06,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:33:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:33:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:33:06,286 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 22:33:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:06,691 INFO L93 Difference]: Finished difference Result 335 states and 458 transitions. [2023-11-06 22:33:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:33:06,692 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 22:33:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:06,695 INFO L225 Difference]: With dead ends: 335 [2023-11-06 22:33:06,695 INFO L226 Difference]: Without dead ends: 335 [2023-11-06 22:33:06,695 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 22:33:06,696 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 22:33:06,696 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 22:33:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-06 22:33:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 243. [2023-11-06 22:33:06,708 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 22:33:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 352 transitions. [2023-11-06 22:33:06,711 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 352 transitions. Word has length 15 [2023-11-06 22:33:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:06,712 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 352 transitions. [2023-11-06 22:33:06,712 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 22:33:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 352 transitions. [2023-11-06 22:33:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:33:06,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:06,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:06,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:06,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:06,919 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 22:33:06,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash -96695001, now seen corresponding path program 1 times [2023-11-06 22:33:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243664409] [2023-11-06 22:33:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:07,144 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 22:33:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243664409] [2023-11-06 22:33:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243664409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:07,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200861934] [2023-11-06 22:33:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:07,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:07,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:07,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:07,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:33:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:07,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:33:07,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:07,501 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 22:33:07,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:07,658 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 22:33:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200861934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:07,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:07,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-11-06 22:33:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436119445] [2023-11-06 22:33:07,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:33:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:33:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:33:07,662 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 22:33:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:08,488 INFO L93 Difference]: Finished difference Result 569 states and 770 transitions. [2023-11-06 22:33:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:33:08,489 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 22:33:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:08,493 INFO L225 Difference]: With dead ends: 569 [2023-11-06 22:33:08,494 INFO L226 Difference]: Without dead ends: 569 [2023-11-06 22:33:08,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:33:08,497 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 22:33:08,498 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 22:33:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-06 22:33:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 352. [2023-11-06 22:33:08,519 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 22:33:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 524 transitions. [2023-11-06 22:33:08,527 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 524 transitions. Word has length 16 [2023-11-06 22:33:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:08,528 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 524 transitions. [2023-11-06 22:33:08,528 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 22:33:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 524 transitions. [2023-11-06 22:33:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:33:08,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:08,529 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 22:33:08,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:08,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:08,736 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 22:33:08,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1930496503, now seen corresponding path program 1 times [2023-11-06 22:33:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:08,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418484732] [2023-11-06 22:33:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:08,796 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 22:33:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418484732] [2023-11-06 22:33:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418484732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:08,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:08,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107194695] [2023-11-06 22:33:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:08,798 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 22:33:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:08,824 INFO L93 Difference]: Finished difference Result 364 states and 509 transitions. [2023-11-06 22:33:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:08,825 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 22:33:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:08,827 INFO L225 Difference]: With dead ends: 364 [2023-11-06 22:33:08,827 INFO L226 Difference]: Without dead ends: 364 [2023-11-06 22:33:08,828 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 22:33:08,828 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 22:33:08,829 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 22:33:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-06 22:33:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 352. [2023-11-06 22:33:08,852 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 22:33:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 504 transitions. [2023-11-06 22:33:08,855 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 504 transitions. Word has length 18 [2023-11-06 22:33:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:08,855 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 504 transitions. [2023-11-06 22:33:08,856 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 22:33:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 504 transitions. [2023-11-06 22:33:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:33:08,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:08,857 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 22:33:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:33:08,858 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 22:33:08,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -487174678, now seen corresponding path program 1 times [2023-11-06 22:33:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574840551] [2023-11-06 22:33:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:08,920 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 22:33:08,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574840551] [2023-11-06 22:33:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574840551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:08,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:08,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845373160] [2023-11-06 22:33:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:08,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:08,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:08,923 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 22:33:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:09,011 INFO L93 Difference]: Finished difference Result 274 states and 379 transitions. [2023-11-06 22:33:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:09,012 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 22:33:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:09,014 INFO L225 Difference]: With dead ends: 274 [2023-11-06 22:33:09,015 INFO L226 Difference]: Without dead ends: 274 [2023-11-06 22:33:09,015 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 22:33:09,018 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 22:33:09,018 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 22:33:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-06 22:33:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2023-11-06 22:33:09,026 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 22:33:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2023-11-06 22:33:09,029 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 25 [2023-11-06 22:33:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:09,031 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2023-11-06 22:33:09,031 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 22:33:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2023-11-06 22:33:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:33:09,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:09,037 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 22:33:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:33:09,037 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 22:33:09,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1487790830, now seen corresponding path program 1 times [2023-11-06 22:33:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447268924] [2023-11-06 22:33:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,371 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 22:33:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447268924] [2023-11-06 22:33:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447268924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016206670] [2023-11-06 22:33:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:09,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:09,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:09,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:33:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:33:09,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:09,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:09,837 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 22:33:09,914 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 22:33:09,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:10,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016206670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:10,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:10,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 13 [2023-11-06 22:33:10,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245465861] [2023-11-06 22:33:10,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:33:10,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:33:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:33:10,114 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 22:33:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:10,919 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2023-11-06 22:33:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:33:10,919 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 22:33:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:10,922 INFO L225 Difference]: With dead ends: 397 [2023-11-06 22:33:10,923 INFO L226 Difference]: Without dead ends: 397 [2023-11-06 22:33:10,923 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 22:33:10,924 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 22:33:10,924 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 22:33:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-06 22:33:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 280. [2023-11-06 22:33:10,934 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 22:33:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 382 transitions. [2023-11-06 22:33:10,936 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 382 transitions. Word has length 27 [2023-11-06 22:33:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:10,937 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 382 transitions. [2023-11-06 22:33:10,937 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 22:33:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 382 transitions. [2023-11-06 22:33:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:33:10,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:10,938 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 22:33:10,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:11,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:33:11,145 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 22:33:11,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -692402736, now seen corresponding path program 1 times [2023-11-06 22:33:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:11,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470444550] [2023-11-06 22:33:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:11,323 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 22:33:11,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:11,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470444550] [2023-11-06 22:33:11,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470444550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:11,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548548411] [2023-11-06 22:33:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:11,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:11,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:11,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:33:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:11,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:33:11,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:11,567 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 22:33:11,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548548411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-06 22:33:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443105] [2023-11-06 22:33:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:33:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:33:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:33:11,570 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 22:33:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:11,677 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2023-11-06 22:33:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:11,678 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 22:33:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:11,680 INFO L225 Difference]: With dead ends: 338 [2023-11-06 22:33:11,680 INFO L226 Difference]: Without dead ends: 338 [2023-11-06 22:33:11,681 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 22:33:11,682 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 22:33:11,682 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 22:33:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-06 22:33:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 288. [2023-11-06 22:33:11,694 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 22:33:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 390 transitions. [2023-11-06 22:33:11,696 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 390 transitions. Word has length 28 [2023-11-06 22:33:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:11,697 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 390 transitions. [2023-11-06 22:33:11,697 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 22:33:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 390 transitions. [2023-11-06 22:33:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:33:11,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:11,700 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 22:33:11,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:33:11,906 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 22:33:11,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash -457123443, now seen corresponding path program 1 times [2023-11-06 22:33:11,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780875417] [2023-11-06 22:33:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,609 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 22:33:12,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780875417] [2023-11-06 22:33:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780875417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292700369] [2023-11-06 22:33:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:12,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:12,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:33:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:33:12,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:13,156 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 22:33:13,316 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 22:33:13,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:13,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292700369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:13,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:13,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2023-11-06 22:33:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835940320] [2023-11-06 22:33:13,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:33:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:33:13,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:33:13,530 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 22:33:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:14,644 INFO L93 Difference]: Finished difference Result 334 states and 438 transitions. [2023-11-06 22:33:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:33:14,645 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 22:33:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:14,647 INFO L225 Difference]: With dead ends: 334 [2023-11-06 22:33:14,648 INFO L226 Difference]: Without dead ends: 334 [2023-11-06 22:33:14,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:33:14,649 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 552 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:14,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 307 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:33:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-06 22:33:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 288. [2023-11-06 22:33:14,660 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 22:33:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 386 transitions. [2023-11-06 22:33:14,665 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 386 transitions. Word has length 29 [2023-11-06 22:33:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:14,667 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 386 transitions. [2023-11-06 22:33:14,668 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 22:33:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 386 transitions. [2023-11-06 22:33:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:33:14,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:14,671 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 22:33:14,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:14,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:33:14,878 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 22:33:14,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:14,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1285924798, now seen corresponding path program 1 times [2023-11-06 22:33:14,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:14,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472775396] [2023-11-06 22:33:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:15,166 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 22:33:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472775396] [2023-11-06 22:33:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472775396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424555783] [2023-11-06 22:33:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:15,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:15,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:15,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:15,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:33:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:15,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:33:15,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:15,396 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:15,397 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 22:33:15,457 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 22:33:15,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424555783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:15,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2023-11-06 22:33:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111185541] [2023-11-06 22:33:15,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:15,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:33:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:33:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:33:15,531 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 22:33:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:16,143 INFO L93 Difference]: Finished difference Result 415 states and 517 transitions. [2023-11-06 22:33:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:33:16,144 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 22:33:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:16,147 INFO L225 Difference]: With dead ends: 415 [2023-11-06 22:33:16,148 INFO L226 Difference]: Without dead ends: 415 [2023-11-06 22:33:16,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:33:16,149 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 483 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 22:33:16,149 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 22:33:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-06 22:33:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 370. [2023-11-06 22:33:16,165 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 22:33:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 482 transitions. [2023-11-06 22:33:16,169 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 482 transitions. Word has length 30 [2023-11-06 22:33:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:16,170 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 482 transitions. [2023-11-06 22:33:16,170 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 22:33:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 482 transitions. [2023-11-06 22:33:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:33:16,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:16,173 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 22:33:16,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:33:16,381 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 22:33:16,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1208963025, now seen corresponding path program 1 times [2023-11-06 22:33:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226903478] [2023-11-06 22:33:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:16,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:16,764 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 22:33:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:16,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226903478] [2023-11-06 22:33:16,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226903478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:16,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267034169] [2023-11-06 22:33:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:16,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:16,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:16,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:16,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:33:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:16,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:33:16,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:17,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:17,078 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 22:33:17,192 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 22:33:17,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267034169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:17,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2023-11-06 22:33:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741044129] [2023-11-06 22:33:17,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:17,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:33:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:33:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:33:17,372 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 22:33:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:18,346 INFO L93 Difference]: Finished difference Result 436 states and 532 transitions. [2023-11-06 22:33:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:33:18,348 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 22:33:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:18,352 INFO L225 Difference]: With dead ends: 436 [2023-11-06 22:33:18,352 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:33:18,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:33:18,354 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 757 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 22:33:18,354 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 22:33:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:33:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 386. [2023-11-06 22:33:18,368 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 22:33:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 501 transitions. [2023-11-06 22:33:18,371 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 501 transitions. Word has length 31 [2023-11-06 22:33:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:18,371 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 501 transitions. [2023-11-06 22:33:18,371 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 22:33:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 501 transitions. [2023-11-06 22:33:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:33:18,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:18,372 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 22:33:18,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:18,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:33:18,579 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 22:33:18,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -219964683, now seen corresponding path program 1 times [2023-11-06 22:33:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882062974] [2023-11-06 22:33:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:18,997 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 22:33:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882062974] [2023-11-06 22:33:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882062974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407758004] [2023-11-06 22:33:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:19,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:33:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:19,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:33:19,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:19,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:19,471 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 22:33:19,668 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 22:33:19,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407758004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:19,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2023-11-06 22:33:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482495946] [2023-11-06 22:33:19,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:19,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:33:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:33:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:33:19,952 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 22:33:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:21,155 INFO L93 Difference]: Finished difference Result 488 states and 599 transitions. [2023-11-06 22:33:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:33:21,156 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 22:33:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:21,159 INFO L225 Difference]: With dead ends: 488 [2023-11-06 22:33:21,160 INFO L226 Difference]: Without dead ends: 488 [2023-11-06 22:33:21,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 22:33:21,162 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 623 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 22:33:21,162 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 22:33:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-06 22:33:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2023-11-06 22:33:21,178 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 22:33:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 484 transitions. [2023-11-06 22:33:21,181 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 484 transitions. Word has length 35 [2023-11-06 22:33:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:21,182 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 484 transitions. [2023-11-06 22:33:21,183 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 22:33:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 484 transitions. [2023-11-06 22:33:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:33:21,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:21,184 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 22:33:21,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:21,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:33:21,398 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 22:33:21,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1858113804, now seen corresponding path program 1 times [2023-11-06 22:33:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:21,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147301948] [2023-11-06 22:33:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:21,515 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 22:33:21,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:21,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147301948] [2023-11-06 22:33:21,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147301948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:21,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665972250] [2023-11-06 22:33:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:21,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:21,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:21,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:33:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:21,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:33:21,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:21,680 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 22:33:21,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:21,725 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 22:33:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665972250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:21,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-11-06 22:33:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502172616] [2023-11-06 22:33:21,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:21,728 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 22:33:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:21,842 INFO L93 Difference]: Finished difference Result 386 states and 481 transitions. [2023-11-06 22:33:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:21,843 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 22:33:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:21,845 INFO L225 Difference]: With dead ends: 386 [2023-11-06 22:33:21,845 INFO L226 Difference]: Without dead ends: 386 [2023-11-06 22:33:21,846 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 22:33:21,847 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 22:33:21,847 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 22:33:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-06 22:33:21,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 383. [2023-11-06 22:33:21,858 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 22:33:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2023-11-06 22:33:21,861 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 40 [2023-11-06 22:33:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:21,861 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2023-11-06 22:33:21,861 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 22:33:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2023-11-06 22:33:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:33:21,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:21,862 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 22:33:21,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:22,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:33:22,072 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 22:33:22,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1766952978, now seen corresponding path program 1 times [2023-11-06 22:33:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8168631] [2023-11-06 22:33:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:22,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:22,285 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 22:33:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8168631] [2023-11-06 22:33:22,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8168631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142052874] [2023-11-06 22:33:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:22,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:22,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:22,290 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:22,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:33:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:22,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:33:22,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:22,479 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 22:33:22,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:22,559 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 22:33:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142052874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:22,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-11-06 22:33:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380561253] [2023-11-06 22:33:22,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:22,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:22,563 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 22:33:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:22,719 INFO L93 Difference]: Finished difference Result 384 states and 475 transitions. [2023-11-06 22:33:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:22,720 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 22:33:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:22,722 INFO L225 Difference]: With dead ends: 384 [2023-11-06 22:33:22,722 INFO L226 Difference]: Without dead ends: 384 [2023-11-06 22:33:22,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:33:22,723 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 22:33:22,723 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 22:33:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-06 22:33:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2023-11-06 22:33:22,733 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 22:33:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 472 transitions. [2023-11-06 22:33:22,736 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 472 transitions. Word has length 41 [2023-11-06 22:33:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:22,736 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 472 transitions. [2023-11-06 22:33:22,736 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 22:33:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 472 transitions. [2023-11-06 22:33:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:33:22,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:22,737 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 22:33:22,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:22,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:22,944 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 22:33:22,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1059032630, now seen corresponding path program 1 times [2023-11-06 22:33:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:22,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421630282] [2023-11-06 22:33:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:23,130 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 22:33:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421630282] [2023-11-06 22:33:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421630282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731381311] [2023-11-06 22:33:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:23,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:23,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:23,133 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:23,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:33:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:23,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:33:23,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:23,270 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 22:33:23,318 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:23,318 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 22:33:23,326 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 22:33:23,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:23,509 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 22:33:23,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731381311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:23,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:23,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-11-06 22:33:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816666603] [2023-11-06 22:33:23,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:23,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:33:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:33:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:33:23,512 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 22:33:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:23,717 INFO L93 Difference]: Finished difference Result 409 states and 499 transitions. [2023-11-06 22:33:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:33:23,720 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 22:33:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:23,722 INFO L225 Difference]: With dead ends: 409 [2023-11-06 22:33:23,722 INFO L226 Difference]: Without dead ends: 409 [2023-11-06 22:33:23,723 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 22:33:23,723 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 22:33:23,726 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 22:33:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-06 22:33:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 381. [2023-11-06 22:33:23,745 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 22:33:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2023-11-06 22:33:23,752 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 42 [2023-11-06 22:33:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:23,753 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2023-11-06 22:33:23,753 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 22:33:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2023-11-06 22:33:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 22:33:23,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:23,754 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 22:33:23,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:23,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:23,960 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 22:33:23,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1461274395, now seen corresponding path program 1 times [2023-11-06 22:33:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:23,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498920664] [2023-11-06 22:33:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,099 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 22:33:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498920664] [2023-11-06 22:33:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498920664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133154860] [2023-11-06 22:33:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:24,102 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:24,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:33:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:33:24,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:24,268 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 22:33:24,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133154860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:24,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:24,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-06 22:33:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356265983] [2023-11-06 22:33:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:33:24,271 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 22:33:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:24,300 INFO L93 Difference]: Finished difference Result 447 states and 527 transitions. [2023-11-06 22:33:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:24,301 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 22:33:24,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:24,304 INFO L225 Difference]: With dead ends: 447 [2023-11-06 22:33:24,304 INFO L226 Difference]: Without dead ends: 447 [2023-11-06 22:33:24,305 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 22:33:24,306 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 22:33:24,307 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 22:33:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-06 22:33:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 372. [2023-11-06 22:33:24,318 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 22:33:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 449 transitions. [2023-11-06 22:33:24,321 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 449 transitions. Word has length 45 [2023-11-06 22:33:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:24,321 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 449 transitions. [2023-11-06 22:33:24,321 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 22:33:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 449 transitions. [2023-11-06 22:33:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:33:24,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:24,322 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 22:33:24,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:33:24,529 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 22:33:24,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash 629474045, now seen corresponding path program 1 times [2023-11-06 22:33:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:24,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861274361] [2023-11-06 22:33:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,591 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 22:33:24,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861274361] [2023-11-06 22:33:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861274361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238279652] [2023-11-06 22:33:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:24,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:24,593 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:24,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:33:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:33:24,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:24,705 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 22:33:24,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238279652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:24,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:24,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:33:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902202321] [2023-11-06 22:33:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:24,707 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 22:33:24,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:24,715 INFO L93 Difference]: Finished difference Result 371 states and 446 transitions. [2023-11-06 22:33:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:24,715 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 22:33:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:24,717 INFO L225 Difference]: With dead ends: 371 [2023-11-06 22:33:24,718 INFO L226 Difference]: Without dead ends: 371 [2023-11-06 22:33:24,718 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 22:33:24,719 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 22:33:24,719 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 22:33:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-06 22:33:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-06 22:33:24,727 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 22:33:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 446 transitions. [2023-11-06 22:33:24,729 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 446 transitions. Word has length 47 [2023-11-06 22:33:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:24,729 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 446 transitions. [2023-11-06 22:33:24,730 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 22:33:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 446 transitions. [2023-11-06 22:33:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:33:24,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:24,731 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 22:33:24,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:33:24,941 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 22:33:24,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1961141011, now seen corresponding path program 1 times [2023-11-06 22:33:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82419426] [2023-11-06 22:33:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,018 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 22:33:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82419426] [2023-11-06 22:33:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82419426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122289985] [2023-11-06 22:33:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:25,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:25,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:25,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:33:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:33:25,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:25,200 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 22:33:25,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122289985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-06 22:33:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022499263] [2023-11-06 22:33:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:33:25,203 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 22:33:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:25,232 INFO L93 Difference]: Finished difference Result 370 states and 443 transitions. [2023-11-06 22:33:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:25,232 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 22:33:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:25,235 INFO L225 Difference]: With dead ends: 370 [2023-11-06 22:33:25,235 INFO L226 Difference]: Without dead ends: 370 [2023-11-06 22:33:25,235 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 22:33:25,236 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 22:33:25,236 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 22:33:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-06 22:33:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-11-06 22:33:25,244 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 22:33:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 443 transitions. [2023-11-06 22:33:25,246 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 443 transitions. Word has length 48 [2023-11-06 22:33:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:25,247 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 443 transitions. [2023-11-06 22:33:25,247 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 22:33:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 443 transitions. [2023-11-06 22:33:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:33:25,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:25,248 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 22:33:25,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:25,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:33:25,454 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 22:33:25,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -665829121, now seen corresponding path program 1 times [2023-11-06 22:33:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:25,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664744044] [2023-11-06 22:33:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,519 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 22:33:25,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:25,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664744044] [2023-11-06 22:33:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664744044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:25,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109101213] [2023-11-06 22:33:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:25,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:25,521 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:25,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:33:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:33:25,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:25,635 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 22:33:25,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109101213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:25,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:25,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:33:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181839998] [2023-11-06 22:33:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:25,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:25,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:25,638 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 22:33:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:25,648 INFO L93 Difference]: Finished difference Result 369 states and 440 transitions. [2023-11-06 22:33:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:25,648 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 22:33:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:25,652 INFO L225 Difference]: With dead ends: 369 [2023-11-06 22:33:25,652 INFO L226 Difference]: Without dead ends: 369 [2023-11-06 22:33:25,653 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 22:33:25,654 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 22:33:25,654 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 22:33:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-06 22:33:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-06 22:33:25,662 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 22:33:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 440 transitions. [2023-11-06 22:33:25,664 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 440 transitions. Word has length 49 [2023-11-06 22:33:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:25,664 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 440 transitions. [2023-11-06 22:33:25,664 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 22:33:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 440 transitions. [2023-11-06 22:33:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:33:25,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:25,666 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 22:33:25,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:25,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:33:25,872 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 22:33:25,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash 800966878, now seen corresponding path program 1 times [2023-11-06 22:33:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314651262] [2023-11-06 22:33:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:26,258 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 22:33:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314651262] [2023-11-06 22:33:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314651262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285766433] [2023-11-06 22:33:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:26,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:26,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:26,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:33:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:26,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:33:26,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:26,529 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:33:26,529 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 22:33:26,684 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:26,684 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 22:33:26,725 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:33:26,725 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 22:33:26,792 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 22:33:26,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:26,844 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:33:26,845 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 22:33:27,079 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:33:27,079 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 22:33:27,282 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 22:33:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285766433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:27,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:27,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 25 [2023-11-06 22:33:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383533087] [2023-11-06 22:33:27,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:27,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:33:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:33:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:33:27,286 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 22:33:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:27,635 INFO L93 Difference]: Finished difference Result 375 states and 444 transitions. [2023-11-06 22:33:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:33:27,636 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 22:33:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:27,638 INFO L225 Difference]: With dead ends: 375 [2023-11-06 22:33:27,639 INFO L226 Difference]: Without dead ends: 375 [2023-11-06 22:33:27,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:33:27,640 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:27,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 159 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:33:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-06 22:33:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 369. [2023-11-06 22:33:27,650 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 22:33:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 439 transitions. [2023-11-06 22:33:27,652 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 439 transitions. Word has length 51 [2023-11-06 22:33:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:27,653 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 439 transitions. [2023-11-06 22:33:27,653 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 22:33:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 439 transitions. [2023-11-06 22:33:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:33:27,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:27,654 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 22:33:27,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:27,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:33:27,860 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 22:33:27,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash -305163153, now seen corresponding path program 1 times [2023-11-06 22:33:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:27,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992200899] [2023-11-06 22:33:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:28,014 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 22:33:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992200899] [2023-11-06 22:33:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992200899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614830315] [2023-11-06 22:33:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:28,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:28,017 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:33:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:28,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:33:28,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:28,195 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 22:33:28,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:28,313 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 22:33:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614830315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:28,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:28,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2023-11-06 22:33:28,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359291394] [2023-11-06 22:33:28,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:28,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:33:28,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:33:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:33:28,317 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 22:33:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:28,572 INFO L93 Difference]: Finished difference Result 340 states and 392 transitions. [2023-11-06 22:33:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:33:28,572 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 22:33:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:28,575 INFO L225 Difference]: With dead ends: 340 [2023-11-06 22:33:28,575 INFO L226 Difference]: Without dead ends: 340 [2023-11-06 22:33:28,575 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 22:33:28,576 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:33:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-06 22:33:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 325. [2023-11-06 22:33:28,585 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 22:33:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 380 transitions. [2023-11-06 22:33:28,587 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 380 transitions. Word has length 51 [2023-11-06 22:33:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:28,588 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 380 transitions. [2023-11-06 22:33:28,588 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 22:33:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 380 transitions. [2023-11-06 22:33:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:33:28,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:28,589 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 22:33:28,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:33:28,798 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 22:33:28,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -26371320, now seen corresponding path program 1 times [2023-11-06 22:33:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756379024] [2023-11-06 22:33:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:28,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:33:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:29,081 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 22:33:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756379024] [2023-11-06 22:33:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756379024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533345397] [2023-11-06 22:33:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:29,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:29,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:29,084 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:29,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:33:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:29,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:33:29,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:29,399 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:29,400 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 22:33:29,451 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 22:33:29,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533345397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:29,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:29,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2023-11-06 22:33:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082051438] [2023-11-06 22:33:29,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:29,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:33:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:33:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:33:29,535 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 22:33:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:30,052 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2023-11-06 22:33:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:33:30,052 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 22:33:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:30,055 INFO L225 Difference]: With dead ends: 343 [2023-11-06 22:33:30,055 INFO L226 Difference]: Without dead ends: 343 [2023-11-06 22:33:30,055 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 22:33:30,056 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 237 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 22:33:30,056 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 22:33:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-06 22:33:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 325. [2023-11-06 22:33:30,073 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 22:33:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 378 transitions. [2023-11-06 22:33:30,076 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 378 transitions. Word has length 52 [2023-11-06 22:33:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:30,077 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 378 transitions. [2023-11-06 22:33:30,077 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 22:33:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 378 transitions. [2023-11-06 22:33:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:33:30,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:30,084 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 22:33:30,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:30,284 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 22:33:30,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash -939830577, now seen corresponding path program 1 times [2023-11-06 22:33:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:30,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16143159] [2023-11-06 22:33:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:31,284 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 22:33:31,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16143159] [2023-11-06 22:33:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16143159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620259732] [2023-11-06 22:33:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:31,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:31,287 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:31,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:33:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:31,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:33:31,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:31,748 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:33:31,749 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 22:33:32,084 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:32,084 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 22:33:32,146 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:33:32,147 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 22:33:32,335 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 22:33:32,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:32,476 INFO L322 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-11-06 22:33:32,476 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 22:33:32,880 INFO L322 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-11-06 22:33:32,880 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 22:33:33,415 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 22:33:33,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620259732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:33,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:33,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 14] total 43 [2023-11-06 22:33:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889407543] [2023-11-06 22:33:33,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:33,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-06 22:33:33,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-06 22:33:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:33:33,420 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 22:33:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:34,645 INFO L93 Difference]: Finished difference Result 392 states and 442 transitions. [2023-11-06 22:33:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:33:34,646 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 22:33:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:34,649 INFO L225 Difference]: With dead ends: 392 [2023-11-06 22:33:34,649 INFO L226 Difference]: Without dead ends: 392 [2023-11-06 22:33:34,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2023-11-06 22:33:34,652 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 22:33:34,652 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 22:33:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-06 22:33:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 325. [2023-11-06 22:33:34,662 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 22:33:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 377 transitions. [2023-11-06 22:33:34,664 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 377 transitions. Word has length 52 [2023-11-06 22:33:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:34,664 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 377 transitions. [2023-11-06 22:33:34,665 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 22:33:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 377 transitions. [2023-11-06 22:33:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:33:34,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:34,666 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 22:33:34,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:34,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:34,873 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 22:33:34,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:34,874 INFO L85 PathProgramCache]: Analyzing trace with hash -817510871, now seen corresponding path program 1 times [2023-11-06 22:33:34,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:34,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540412140] [2023-11-06 22:33:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:33:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,327 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 22:33:35,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540412140] [2023-11-06 22:33:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540412140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504332437] [2023-11-06 22:33:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:35,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:35,329 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:35,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:33:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:33:35,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:35,700 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 22:33:35,802 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 22:33:35,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504332437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:35,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2023-11-06 22:33:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605193234] [2023-11-06 22:33:35,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:35,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:33:35,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:33:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:33:35,959 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 22:33:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:36,833 INFO L93 Difference]: Finished difference Result 339 states and 381 transitions. [2023-11-06 22:33:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:33:36,834 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 22:33:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:36,836 INFO L225 Difference]: With dead ends: 339 [2023-11-06 22:33:36,836 INFO L226 Difference]: Without dead ends: 339 [2023-11-06 22:33:36,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:33:36,838 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 318 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:36,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 275 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:33:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-06 22:33:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2023-11-06 22:33:36,848 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 22:33:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 369 transitions. [2023-11-06 22:33:36,850 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 369 transitions. Word has length 53 [2023-11-06 22:33:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:36,851 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 369 transitions. [2023-11-06 22:33:36,851 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 22:33:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 369 transitions. [2023-11-06 22:33:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:33:36,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:36,853 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 22:33:36,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:37,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:33:37,060 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 22:33:37,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1556293263, now seen corresponding path program 1 times [2023-11-06 22:33:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532628721] [2023-11-06 22:33:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:37,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:37,122 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 22:33:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:37,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532628721] [2023-11-06 22:33:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532628721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894744109] [2023-11-06 22:33:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:37,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:37,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:37,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:33:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:37,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:33:37,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:37,254 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 22:33:37,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894744109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:37,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-06 22:33:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918231660] [2023-11-06 22:33:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:37,256 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 22:33:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:37,262 INFO L93 Difference]: Finished difference Result 264 states and 293 transitions. [2023-11-06 22:33:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:37,263 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 22:33:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:37,265 INFO L225 Difference]: With dead ends: 264 [2023-11-06 22:33:37,265 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 22:33:37,265 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 22:33:37,266 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 22:33:37,266 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 22:33:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 22:33:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2023-11-06 22:33:37,274 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 22:33:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions. [2023-11-06 22:33:37,276 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 52 [2023-11-06 22:33:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:37,277 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 290 transitions. [2023-11-06 22:33:37,277 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 22:33:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions. [2023-11-06 22:33:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:33:37,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:37,278 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 22:33:37,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:37,485 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 22:33:37,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1234050895, now seen corresponding path program 1 times [2023-11-06 22:33:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543704362] [2023-11-06 22:33:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:38,031 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 22:33:38,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543704362] [2023-11-06 22:33:38,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543704362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611828444] [2023-11-06 22:33:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:38,035 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:38,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:33:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:38,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:33:38,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:38,263 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:38,264 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 22:33:38,403 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 22:33:38,450 INFO L322 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2023-11-06 22:33:38,451 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 22:33:38,513 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 22:33:38,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611828444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:38,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2023-11-06 22:33:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567740535] [2023-11-06 22:33:38,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:33:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:33:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=409, Unknown=1, NotChecked=42, Total=552 [2023-11-06 22:33:38,914 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 22:33:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:39,838 INFO L93 Difference]: Finished difference Result 269 states and 298 transitions. [2023-11-06 22:33:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:33:39,838 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 22:33:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:39,840 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:33:39,840 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 22:33:39,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=361, Invalid=1124, Unknown=1, NotChecked=74, Total=1560 [2023-11-06 22:33:39,842 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 289 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 22:33:39,842 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 22:33:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 22:33:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 260. [2023-11-06 22:33:39,849 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 22:33:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 289 transitions. [2023-11-06 22:33:39,851 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 289 transitions. Word has length 54 [2023-11-06 22:33:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:39,851 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 289 transitions. [2023-11-06 22:33:39,851 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 22:33:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 289 transitions. [2023-11-06 22:33:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:33:39,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:39,853 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 22:33:39,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:40,059 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 22:33:40,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1095435096, now seen corresponding path program 1 times [2023-11-06 22:33:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:40,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371936343] [2023-11-06 22:33:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:40,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:40,700 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 22:33:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371936343] [2023-11-06 22:33:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371936343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695835993] [2023-11-06 22:33:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:40,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:40,703 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:40,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:33:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:40,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:33:40,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:41,176 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:41,177 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 22:33:41,553 INFO L322 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2023-11-06 22:33:41,554 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 22:33:41,762 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 22:33:41,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695835993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:41,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2023-11-06 22:33:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074604311] [2023-11-06 22:33:41,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:41,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:33:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:33:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=812, Unknown=4, NotChecked=0, Total=930 [2023-11-06 22:33:41,937 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 22:33:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:43,107 INFO L93 Difference]: Finished difference Result 332 states and 361 transitions. [2023-11-06 22:33:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:33:43,108 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 22:33:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:43,110 INFO L225 Difference]: With dead ends: 332 [2023-11-06 22:33:43,110 INFO L226 Difference]: Without dead ends: 332 [2023-11-06 22:33:43,111 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 22:33:43,111 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 22:33:43,112 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 22:33:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-06 22:33:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 259. [2023-11-06 22:33:43,126 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 22:33:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 288 transitions. [2023-11-06 22:33:43,128 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 288 transitions. Word has length 60 [2023-11-06 22:33:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:43,130 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 288 transitions. [2023-11-06 22:33:43,130 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 22:33:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 288 transitions. [2023-11-06 22:33:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:33:43,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:43,132 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 22:33:43,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:43,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:43,337 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 22:33:43,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash 401250437, now seen corresponding path program 1 times [2023-11-06 22:33:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:43,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571331752] [2023-11-06 22:33:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:44,311 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 22:33:44,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571331752] [2023-11-06 22:33:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571331752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157974514] [2023-11-06 22:33:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:44,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:44,314 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:44,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:33:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:44,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 22:33:44,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:45,429 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:45,429 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 22:33:45,437 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 22:33:46,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:46,042 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 22:33:46,455 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 22:33:46,466 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:46,466 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 22:33:46,510 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 22:33:46,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:46,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157974514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:46,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:46,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 28 [2023-11-06 22:33:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797653321] [2023-11-06 22:33:46,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:46,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:33:46,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:33:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:33:46,868 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 22:33:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:50,314 INFO L93 Difference]: Finished difference Result 337 states and 364 transitions. [2023-11-06 22:33:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:33:50,315 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 22:33:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:50,318 INFO L225 Difference]: With dead ends: 337 [2023-11-06 22:33:50,318 INFO L226 Difference]: Without dead ends: 337 [2023-11-06 22:33:50,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=841, Invalid=3851, Unknown=0, NotChecked=0, Total=4692 [2023-11-06 22:33:50,321 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 516 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:50,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 278 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:33:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-06 22:33:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 258. [2023-11-06 22:33:50,331 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 22:33:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 287 transitions. [2023-11-06 22:33:50,332 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 287 transitions. Word has length 61 [2023-11-06 22:33:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:50,333 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 287 transitions. [2023-11-06 22:33:50,333 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 22:33:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 287 transitions. [2023-11-06 22:33:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:33:50,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:50,335 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 22:33:50,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:50,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:50,542 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 22:33:50,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1576724517, now seen corresponding path program 1 times [2023-11-06 22:33:50,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032655345] [2023-11-06 22:33:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:50,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:33:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:33:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:51,019 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 22:33:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032655345] [2023-11-06 22:33:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032655345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677890447] [2023-11-06 22:33:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:51,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:51,022 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:51,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:33:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:51,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:33:51,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:51,190 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 22:33:51,372 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:51,373 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 22:33:51,409 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:33:51,410 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 22:33:51,423 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 22:33:51,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677890447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:51,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-06 22:33:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537060420] [2023-11-06 22:33:51,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:33:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:33:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:33:51,535 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 22:33:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:51,913 INFO L93 Difference]: Finished difference Result 269 states and 297 transitions. [2023-11-06 22:33:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:33:51,913 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 22:33:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:51,915 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:33:51,915 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 22:33:51,916 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 22:33:51,916 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 22:33:51,916 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 22:33:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 22:33:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 212. [2023-11-06 22:33:51,923 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 22:33:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2023-11-06 22:33:51,925 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 66 [2023-11-06 22:33:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:51,925 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2023-11-06 22:33:51,926 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 22:33:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2023-11-06 22:33:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:33:51,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:51,927 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 22:33:51,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:52,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:52,134 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 22:33:52,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2065204372, now seen corresponding path program 1 times [2023-11-06 22:33:52,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671300427] [2023-11-06 22:33:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:52,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:52,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:52,251 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:33:52,252 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-06 22:33:52,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-06 22:33:52,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-06 22:33:52,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-06 22:33:52,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-06 22:33:52,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-06 22:33:52,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-06 22:33:52,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-06 22:33:52,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-06 22:33:52,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-06 22:33:52,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-06 22:33:52,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2023-11-06 22:33:52,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2023-11-06 22:33:52,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2023-11-06 22:33:52,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2023-11-06 22:33:52,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2023-11-06 22:33:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2023-11-06 22:33:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-06 22:33:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-06 22:33:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-06 22:33:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 22:33:52,268 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 22:33:52,273 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:33:52,375 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 22:33:52,381 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 22:33:52,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:33:52 BoogieIcfgContainer [2023-11-06 22:33:52,403 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:33:52,404 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:33:52,404 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:33:52,405 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:33:52,405 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:00" (3/4) ... [2023-11-06 22:33:52,408 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:33:52,409 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:33:52,411 INFO L158 Benchmark]: Toolchain (without parser) took 52938.80ms. Allocated memory was 125.8MB in the beginning and 264.2MB in the end (delta: 138.4MB). Free memory was 79.6MB in the beginning and 209.4MB in the end (delta: -129.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,413 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 80.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:33:52,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.80ms. Allocated memory is still 125.8MB. Free memory was 79.3MB in the beginning and 59.7MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.05ms. Allocated memory is still 125.8MB. Free memory was 59.7MB in the beginning and 57.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,419 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 125.8MB. Free memory was 57.5MB in the beginning and 55.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,419 INFO L158 Benchmark]: RCFGBuilder took 602.97ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 116.5MB in the end (delta: -60.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,420 INFO L158 Benchmark]: TraceAbstraction took 51642.20ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 115.8MB in the beginning and 209.4MB in the end (delta: -93.6MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:52,421 INFO L158 Benchmark]: Witness Printer took 5.53ms. Allocated memory is still 264.2MB. Free memory is still 209.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:33:52,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 80.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.80ms. Allocated memory is still 125.8MB. Free memory was 79.3MB in the beginning and 59.7MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.05ms. Allocated memory is still 125.8MB. Free memory was 59.7MB in the beginning and 57.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 125.8MB. Free memory was 57.5MB in the beginning and 55.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 602.97ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 116.5MB in the end (delta: -60.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 51642.20ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 115.8MB in the beginning and 209.4MB in the end (delta: -93.6MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 5.53ms. Allocated memory is still 264.2MB. Free memory is still 209.4MB. There was no memory consumed. 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, overapproximation of memtrack at line 721. 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: 51.4s, OverallIterations: 35, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 8620 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8618 mSDsluCounter, 7123 SdHoareTripleChecker+Invalid, 7.3s 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, 14.6s 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: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 23.2s 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 22:33:52,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:33:55,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:33:55,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:33:55,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:33:55,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:33:55,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:33:55,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:33:55,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:33:55,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:33:55,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:33:55,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:33:55,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:33:55,441 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:33:55,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:33:55,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:33:55,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:33:55,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:33:55,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:33:55,445 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:33:55,446 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:33:55,447 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:33:55,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:33:55,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:33:55,449 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:33:55,450 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:33:55,450 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:33:55,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:33:55,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:33:55,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:33:55,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:33:55,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:33:55,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:33:55,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:33:55,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:33:55,456 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:33:55,456 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:33:55,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:33:55,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:33:55,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:33:55,458 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:33:55,458 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:33:55,458 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_a72b5a22-2f12-42c8-9e45-d67b401f1def/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-06 22:33:55,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:33:55,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:33:55,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:33:55,975 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:33:55,975 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:33:55,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:33:59,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:34:00,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:34:00,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-06 22:34:00,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/dc4f34b9c/1aff31a69b7f42eca3fe66395815f0d7/FLAGb4d63b304 [2023-11-06 22:34:00,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/data/dc4f34b9c/1aff31a69b7f42eca3fe66395815f0d7 [2023-11-06 22:34:00,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:34:00,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:34:00,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:00,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:34:00,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:34:00,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00, skipping insertion in model container [2023-11-06 22:34:00,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:34:00,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:00,702 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:34:00,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:00,844 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:34:00,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00 WrapperNode [2023-11-06 22:34:00,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:00,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:00,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:34:00,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:34:00,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,931 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2023-11-06 22:34:00,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:00,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:34:00,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:34:00,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:34:00,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:00,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:01,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:01,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:34:01,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:34:01,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:34:01,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:34:01,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (1/1) ... [2023-11-06 22:34:01,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:01,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:01,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:34:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:34:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-06 22:34:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-06 22:34:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:34:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:34:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:34:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:34:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:34:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:34:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:34:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:34:01,222 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:34:01,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:34:01,527 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:34:01,534 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:34:01,534 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:34:01,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:01 BoogieIcfgContainer [2023-11-06 22:34:01,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:34:01,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:34:01,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:34:01,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:34:01,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:34:00" (1/3) ... [2023-11-06 22:34:01,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da4b0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:01, skipping insertion in model container [2023-11-06 22:34:01,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00" (2/3) ... [2023-11-06 22:34:01,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da4b0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:01, skipping insertion in model container [2023-11-06 22:34:01,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:01" (3/3) ... [2023-11-06 22:34:01,557 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-06 22:34:01,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:34:01,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:34:01,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:34:01,635 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;@53f7a0e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:34:01,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:34:01,640 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 22:34:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:34:01,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:01,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:34:01,649 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 22:34:01,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -742866944, now seen corresponding path program 1 times [2023-11-06 22:34:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831921309] [2023-11-06 22:34:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:01,671 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 22:34:01,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:01,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:01,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:34:01,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:01,933 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 22:34:01,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:01,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831921309] [2023-11-06 22:34:01,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831921309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:01,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:01,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:34:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736555266] [2023-11-06 22:34:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:01,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:01,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:01,991 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 22:34:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:02,204 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2023-11-06 22:34:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:02,207 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 22:34:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:02,217 INFO L225 Difference]: With dead ends: 112 [2023-11-06 22:34:02,217 INFO L226 Difference]: Without dead ends: 108 [2023-11-06 22:34:02,219 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 22:34:02,222 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 22:34:02,224 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 22:34:02,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-06 22:34:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2023-11-06 22:34:02,277 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 22:34:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2023-11-06 22:34:02,283 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 6 [2023-11-06 22:34:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:02,284 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-06 22:34:02,284 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 22:34:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2023-11-06 22:34:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:34:02,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:02,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:34:02,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:02,490 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 22:34:02,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash -742866943, now seen corresponding path program 1 times [2023-11-06 22:34:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:02,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903662072] [2023-11-06 22:34:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:02,492 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 22:34:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:02,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:02,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:02,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:34:02,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:02,680 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 22:34:02,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:02,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903662072] [2023-11-06 22:34:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903662072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:02,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:34:02,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759156415] [2023-11-06 22:34:02,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:02,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:02,685 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 22:34:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:02,978 INFO L93 Difference]: Finished difference Result 210 states and 282 transitions. [2023-11-06 22:34:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:34:02,979 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 22:34:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:02,983 INFO L225 Difference]: With dead ends: 210 [2023-11-06 22:34:02,984 INFO L226 Difference]: Without dead ends: 210 [2023-11-06 22:34:02,984 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 22:34:02,986 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:02,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 144 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:34:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-06 22:34:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2023-11-06 22:34:03,016 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 22:34:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 242 transitions. [2023-11-06 22:34:03,022 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 242 transitions. Word has length 6 [2023-11-06 22:34:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:03,022 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 242 transitions. [2023-11-06 22:34:03,023 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 22:34:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 242 transitions. [2023-11-06 22:34:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:34:03,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:03,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:03,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:03,239 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 22:34:03,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1554038803, now seen corresponding path program 1 times [2023-11-06 22:34:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802666888] [2023-11-06 22:34:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:03,242 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 22:34:03,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:03,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:03,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:03,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:03,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:03,577 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 22:34:03,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:03,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802666888] [2023-11-06 22:34:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802666888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:03,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503524103] [2023-11-06 22:34:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:03,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:03,583 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 22:34:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:04,027 INFO L93 Difference]: Finished difference Result 232 states and 329 transitions. [2023-11-06 22:34:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:04,029 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 22:34:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:04,032 INFO L225 Difference]: With dead ends: 232 [2023-11-06 22:34:04,033 INFO L226 Difference]: Without dead ends: 232 [2023-11-06 22:34:04,033 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 22:34:04,035 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:04,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 179 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:34:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-06 22:34:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 159. [2023-11-06 22:34:04,086 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 22:34:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 245 transitions. [2023-11-06 22:34:04,093 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 245 transitions. Word has length 7 [2023-11-06 22:34:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:04,094 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 245 transitions. [2023-11-06 22:34:04,095 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 22:34:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 245 transitions. [2023-11-06 22:34:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:34:04,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:04,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:04,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:04,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:04,317 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 22:34:04,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -930562592, now seen corresponding path program 1 times [2023-11-06 22:34:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686320861] [2023-11-06 22:34:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:04,320 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 22:34:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:04,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:04,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:04,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:04,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:04,677 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 22:34:04,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:04,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686320861] [2023-11-06 22:34:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686320861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110274684] [2023-11-06 22:34:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:04,682 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 22:34:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:05,064 INFO L93 Difference]: Finished difference Result 212 states and 283 transitions. [2023-11-06 22:34:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:05,066 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 22:34:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:05,068 INFO L225 Difference]: With dead ends: 212 [2023-11-06 22:34:05,069 INFO L226 Difference]: Without dead ends: 212 [2023-11-06 22:34:05,069 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 22:34:05,071 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 94 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 22:34:05,071 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 22:34:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-06 22:34:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 159. [2023-11-06 22:34:05,087 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 22:34:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2023-11-06 22:34:05,090 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 8 [2023-11-06 22:34:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2023-11-06 22:34:05,091 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 22:34:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2023-11-06 22:34:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:34:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:05,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:05,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,306 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 22:34:05,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1217330767, now seen corresponding path program 1 times [2023-11-06 22:34:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649069440] [2023-11-06 22:34:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:05,309 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 22:34:05,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:05,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:05,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:34:05,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:05,499 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 22:34:05,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:05,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649069440] [2023-11-06 22:34:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649069440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:05,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:05,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721166059] [2023-11-06 22:34:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:05,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:05,509 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 22:34:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:05,739 INFO L93 Difference]: Finished difference Result 239 states and 326 transitions. [2023-11-06 22:34:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:05,740 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 22:34:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:05,743 INFO L225 Difference]: With dead ends: 239 [2023-11-06 22:34:05,743 INFO L226 Difference]: Without dead ends: 239 [2023-11-06 22:34:05,743 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 22:34:05,747 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 177 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 22:34:05,748 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 22:34:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-06 22:34:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 196. [2023-11-06 22:34:05,767 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 22:34:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2023-11-06 22:34:05,770 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 9 [2023-11-06 22:34:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:05,771 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2023-11-06 22:34:05,771 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 22:34:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2023-11-06 22:34:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:34:05,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:05,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:05,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,985 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 22:34:05,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -917451838, now seen corresponding path program 1 times [2023-11-06 22:34:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679297689] [2023-11-06 22:34:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:05,987 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 22:34:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:05,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:05,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:06,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:06,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:06,214 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 22:34:06,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:06,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679297689] [2023-11-06 22:34:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679297689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:06,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246520043] [2023-11-06 22:34:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:06,218 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 22:34:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:06,490 INFO L93 Difference]: Finished difference Result 236 states and 309 transitions. [2023-11-06 22:34:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:06,491 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 22:34:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:06,494 INFO L225 Difference]: With dead ends: 236 [2023-11-06 22:34:06,494 INFO L226 Difference]: Without dead ends: 236 [2023-11-06 22:34:06,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:34:06,495 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 22:34:06,496 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 22:34:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-06 22:34:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 206. [2023-11-06 22:34:06,507 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 22:34:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 307 transitions. [2023-11-06 22:34:06,510 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 307 transitions. Word has length 10 [2023-11-06 22:34:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:06,511 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 307 transitions. [2023-11-06 22:34:06,511 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 22:34:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 307 transitions. [2023-11-06 22:34:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:34:06,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:06,512 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:06,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:06,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:06,726 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 22:34:06,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -657083128, now seen corresponding path program 1 times [2023-11-06 22:34:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948091654] [2023-11-06 22:34:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:06,728 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 22:34:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:06,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:06,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:06,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:07,093 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 22:34:07,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:07,558 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 22:34:07,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948091654] [2023-11-06 22:34:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948091654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:07,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:07,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:34:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355038397] [2023-11-06 22:34:07,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:34:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:34:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:34:07,561 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 22:34:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:08,310 INFO L93 Difference]: Finished difference Result 372 states and 500 transitions. [2023-11-06 22:34:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:34:08,311 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 22:34:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:08,315 INFO L225 Difference]: With dead ends: 372 [2023-11-06 22:34:08,315 INFO L226 Difference]: Without dead ends: 372 [2023-11-06 22:34:08,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:34:08,316 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 281 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:08,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 324 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:34:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-06 22:34:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 244. [2023-11-06 22:34:08,331 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 22:34:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 368 transitions. [2023-11-06 22:34:08,335 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 368 transitions. Word has length 14 [2023-11-06 22:34:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:08,335 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 368 transitions. [2023-11-06 22:34:08,335 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 22:34:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 368 transitions. [2023-11-06 22:34:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:34:08,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:08,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:08,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:08,550 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 22:34:08,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1105259462, now seen corresponding path program 1 times [2023-11-06 22:34:08,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686997909] [2023-11-06 22:34:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:08,552 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 22:34:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:08,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:08,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:08,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:34:08,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:08,935 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 22:34:08,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:09,155 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 22:34:09,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:09,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686997909] [2023-11-06 22:34:09,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686997909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:09,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:09,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:34:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686149607] [2023-11-06 22:34:09,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:09,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:34:09,158 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 22:34:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:09,935 INFO L93 Difference]: Finished difference Result 410 states and 572 transitions. [2023-11-06 22:34:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:34:09,936 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 22:34:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:09,939 INFO L225 Difference]: With dead ends: 410 [2023-11-06 22:34:09,939 INFO L226 Difference]: Without dead ends: 410 [2023-11-06 22:34:09,940 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 22:34:09,940 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 213 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 22:34:09,941 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 22:34:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-06 22:34:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2023-11-06 22:34:09,953 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 22:34:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2023-11-06 22:34:09,956 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 15 [2023-11-06 22:34:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:09,956 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2023-11-06 22:34:09,957 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 22:34:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2023-11-06 22:34:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:34:09,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:09,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:09,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:10,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:10,175 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 22:34:10,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash -96695001, now seen corresponding path program 1 times [2023-11-06 22:34:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415344980] [2023-11-06 22:34:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:10,176 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 22:34:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:10,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:10,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:10,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:10,718 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 22:34:10,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:11,017 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 22:34:11,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415344980] [2023-11-06 22:34:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415344980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:11,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:11,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:34:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419303573] [2023-11-06 22:34:11,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:11,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:11,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:11,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:34:11,020 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 22:34:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:12,711 INFO L93 Difference]: Finished difference Result 635 states and 850 transitions. [2023-11-06 22:34:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:34:12,712 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 22:34:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:12,717 INFO L225 Difference]: With dead ends: 635 [2023-11-06 22:34:12,718 INFO L226 Difference]: Without dead ends: 635 [2023-11-06 22:34:12,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:34:12,719 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:12,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 496 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:34:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-11-06 22:34:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 372. [2023-11-06 22:34:12,740 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 22:34:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 584 transitions. [2023-11-06 22:34:12,744 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 584 transitions. Word has length 16 [2023-11-06 22:34:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 584 transitions. [2023-11-06 22:34:12,745 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 22:34:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 584 transitions. [2023-11-06 22:34:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:34:12,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:12,747 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 22:34:12,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:12,960 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 22:34:12,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1930496503, now seen corresponding path program 1 times [2023-11-06 22:34:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:12,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111984942] [2023-11-06 22:34:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:12,961 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 22:34:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:12,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:12,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:13,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:34:13,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:13,167 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 22:34:13,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:13,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111984942] [2023-11-06 22:34:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111984942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:13,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:13,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:34:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611559638] [2023-11-06 22:34:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:13,171 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 22:34:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:13,211 INFO L93 Difference]: Finished difference Result 390 states and 568 transitions. [2023-11-06 22:34:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:13,212 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 22:34:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:13,215 INFO L225 Difference]: With dead ends: 390 [2023-11-06 22:34:13,216 INFO L226 Difference]: Without dead ends: 390 [2023-11-06 22:34:13,216 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 22:34:13,217 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 22:34:13,218 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 22:34:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-06 22:34:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2023-11-06 22:34:13,231 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 22:34:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 559 transitions. [2023-11-06 22:34:13,235 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 559 transitions. Word has length 18 [2023-11-06 22:34:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:13,235 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 559 transitions. [2023-11-06 22:34:13,236 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 22:34:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 559 transitions. [2023-11-06 22:34:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:34:13,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:13,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:34:13,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:13,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:13,451 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 22:34:13,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1911770353, now seen corresponding path program 2 times [2023-11-06 22:34:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823397528] [2023-11-06 22:34:13,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:34:13,452 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 22:34:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:13,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:13,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:13,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:34:13,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:13,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:13,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:13,913 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 22:34:13,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:14,771 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 22:34:14,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823397528] [2023-11-06 22:34:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823397528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:14,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:34:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641555921] [2023-11-06 22:34:14,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:14,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:34:14,775 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 22:34:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:16,895 INFO L93 Difference]: Finished difference Result 618 states and 876 transitions. [2023-11-06 22:34:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:34:16,897 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 22:34:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:16,902 INFO L225 Difference]: With dead ends: 618 [2023-11-06 22:34:16,902 INFO L226 Difference]: Without dead ends: 618 [2023-11-06 22:34:16,903 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 22:34:16,904 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 266 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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 22:34:16,904 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 22:34:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-06 22:34:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 408. [2023-11-06 22:34:16,925 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 22:34:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 624 transitions. [2023-11-06 22:34:16,929 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 624 transitions. Word has length 22 [2023-11-06 22:34:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:16,929 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 624 transitions. [2023-11-06 22:34:16,929 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 22:34:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 624 transitions. [2023-11-06 22:34:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:34:16,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:16,931 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 22:34:16,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,146 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 22:34:17,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash -487174678, now seen corresponding path program 1 times [2023-11-06 22:34:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:17,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288390170] [2023-11-06 22:34:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:17,147 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 22:34:17,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:17,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:17,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:34:17,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:17,267 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 22:34:17,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:17,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:17,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288390170] [2023-11-06 22:34:17,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288390170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:17,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:17,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:17,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128672435] [2023-11-06 22:34:17,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:17,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:17,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:17,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:17,271 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 22:34:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:17,282 INFO L93 Difference]: Finished difference Result 307 states and 460 transitions. [2023-11-06 22:34:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:17,283 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 22:34:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:17,286 INFO L225 Difference]: With dead ends: 307 [2023-11-06 22:34:17,286 INFO L226 Difference]: Without dead ends: 307 [2023-11-06 22:34:17,287 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 22:34:17,288 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 22:34:17,288 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 22:34:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-06 22:34:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-06 22:34:17,299 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 22:34:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 460 transitions. [2023-11-06 22:34:17,302 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 460 transitions. Word has length 25 [2023-11-06 22:34:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:17,303 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 460 transitions. [2023-11-06 22:34:17,303 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 22:34:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 460 transitions. [2023-11-06 22:34:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:34:17,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:17,305 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 22:34:17,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:17,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,521 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 22:34:17,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1487790830, now seen corresponding path program 1 times [2023-11-06 22:34:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:17,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035588392] [2023-11-06 22:34:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:17,522 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 22:34:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:17,524 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:17,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:17,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:18,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:18,172 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 22:34:18,264 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 22:34:18,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:20,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:20,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035588392] [2023-11-06 22:34:20,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035588392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:20,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [901090746] [2023-11-06 22:34:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:20,728 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:34:20,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:34:20,749 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:34:20,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-06 22:34:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:20,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:20,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:21,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:21,378 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 22:34:21,427 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 22:34:21,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [901090746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:21,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-06 22:34:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264652309] [2023-11-06 22:34:21,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:21,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:34:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:34:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2023-11-06 22:34:21,755 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 22:34:24,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:34:26,410 WARN L539 Checker$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 22:34:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:26,999 INFO L93 Difference]: Finished difference Result 442 states and 600 transitions. [2023-11-06 22:34:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:34:27,000 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 22:34:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:27,004 INFO L225 Difference]: With dead ends: 442 [2023-11-06 22:34:27,004 INFO L226 Difference]: Without dead ends: 442 [2023-11-06 22:34:27,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=134, Invalid=285, Unknown=1, NotChecked=0, Total=420 [2023-11-06 22:34:27,005 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 273 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:27,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 126 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 127 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:34:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-06 22:34:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 320. [2023-11-06 22:34:27,019 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 22:34:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 452 transitions. [2023-11-06 22:34:27,022 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 452 transitions. Word has length 27 [2023-11-06 22:34:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:27,022 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 452 transitions. [2023-11-06 22:34:27,023 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 22:34:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 452 transitions. [2023-11-06 22:34:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:34:27,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:27,024 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 22:34:27,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:27,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:27,428 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 22:34:27,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -692402736, now seen corresponding path program 1 times [2023-11-06 22:34:27,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:27,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337448071] [2023-11-06 22:34:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:27,430 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 22:34:27,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:27,434 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:27,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:27,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:27,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:27,685 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 22:34:27,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:27,914 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 22:34:27,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:27,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337448071] [2023-11-06 22:34:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337448071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:27,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:27,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-06 22:34:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724211326] [2023-11-06 22:34:27,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:34:27,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:34:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:34:27,920 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 22:34:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:28,456 INFO L93 Difference]: Finished difference Result 454 states and 588 transitions. [2023-11-06 22:34:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:34:28,457 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 22:34:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:28,462 INFO L225 Difference]: With dead ends: 454 [2023-11-06 22:34:28,462 INFO L226 Difference]: Without dead ends: 454 [2023-11-06 22:34:28,464 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 22:34:28,465 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:28,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 270 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:34:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-06 22:34:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 405. [2023-11-06 22:34:28,502 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 22:34:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 553 transitions. [2023-11-06 22:34:28,513 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 553 transitions. Word has length 28 [2023-11-06 22:34:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 553 transitions. [2023-11-06 22:34:28,514 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 22:34:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 553 transitions. [2023-11-06 22:34:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:34:28,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:28,516 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 22:34:28,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:28,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:28,732 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 22:34:28,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash 10351713, now seen corresponding path program 1 times [2023-11-06 22:34:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956296970] [2023-11-06 22:34:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:28,734 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 22:34:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:28,735 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:28,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:28,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:28,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:29,055 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 22:34:29,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:29,307 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 22:34:29,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:29,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956296970] [2023-11-06 22:34:29,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956296970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:29,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:34:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713409227] [2023-11-06 22:34:29,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:34:29,310 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 22:34:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:30,049 INFO L93 Difference]: Finished difference Result 436 states and 559 transitions. [2023-11-06 22:34:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:34:30,050 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 22:34:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:30,053 INFO L225 Difference]: With dead ends: 436 [2023-11-06 22:34:30,053 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:34:30,053 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 22:34:30,054 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:30,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 235 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:34:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:34:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 415. [2023-11-06 22:34:30,070 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 22:34:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 554 transitions. [2023-11-06 22:34:30,073 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 554 transitions. Word has length 29 [2023-11-06 22:34:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:30,073 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 554 transitions. [2023-11-06 22:34:30,074 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 22:34:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 554 transitions. [2023-11-06 22:34:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:34:30,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:30,075 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 22:34:30,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:30,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:30,289 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 22:34:30,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash -457123443, now seen corresponding path program 1 times [2023-11-06 22:34:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:30,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120555631] [2023-11-06 22:34:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:30,291 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 22:34:30,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:30,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:30,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:30,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:34:30,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:31,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:31,159 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 22:34:31,368 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 22:34:31,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:33,652 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_20 (_ BitVec 32)) (|v_parse_input_c1_~x~0#1.base_23| (_ BitVec 32))) (or (bvult (select (select |c_#memory_$Pointer$.offset| |c_~#commands~0.base|) |c_~#commands~0.offset|) (select (store |c_#length| |v_parse_input_c1_~x~0#1.base_23| v_ArrVal_20) (select (select |c_#memory_$Pointer$.base| |c_~#commands~0.base|) |c_~#commands~0.offset|))) (not (= (select |c_#valid| |v_parse_input_c1_~x~0#1.base_23|) (_ bv0 1))))) is different from false [2023-11-06 22:34:33,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120555631] [2023-11-06 22:34:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120555631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375462103] [2023-11-06 22:34:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:34:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:34:33,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:34:33,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-06 22:34:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:33,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:34:33,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:34,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:34,586 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 22:34:34,707 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 22:34:34,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:36,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375462103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:36,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:36,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2023-11-06 22:34:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098515485] [2023-11-06 22:34:36,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:36,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:34:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:34:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=124, Unknown=2, NotChecked=22, Total=182 [2023-11-06 22:34:36,966 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 22:34:39,566 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 22:34:41,849 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 22:34:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:42,200 INFO L93 Difference]: Finished difference Result 570 states and 738 transitions. [2023-11-06 22:34:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:34:42,201 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 22:34:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:42,204 INFO L225 Difference]: With dead ends: 570 [2023-11-06 22:34:42,204 INFO L226 Difference]: Without dead ends: 570 [2023-11-06 22:34:42,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=221, Invalid=537, Unknown=2, NotChecked=52, Total=812 [2023-11-06 22:34:42,206 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 357 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:42,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 175 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:34:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-06 22:34:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 415. [2023-11-06 22:34:42,222 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 22:34:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2023-11-06 22:34:42,225 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 29 [2023-11-06 22:34:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:42,225 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2023-11-06 22:34:42,225 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 22:34:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2023-11-06 22:34:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:34:42,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:42,227 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 22:34:42,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:42,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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)] Ended with exit code 0 [2023-11-06 22:34:42,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:42,631 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 22:34:42,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash -219964683, now seen corresponding path program 1 times [2023-11-06 22:34:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:42,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969022653] [2023-11-06 22:34:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:42,632 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 22:34:42,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:42,634 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:42,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:42,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:34:42,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:43,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:43,136 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 22:34:43,380 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 22:34:43,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:43,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969022653] [2023-11-06 22:34:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969022653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724646189] [2023-11-06 22:34:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:43,948 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:34:43,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:34:43,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:34:43,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-06 22:34:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:44,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:34:44,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:44,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:44,546 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 22:34:44,700 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 22:34:44,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1724646189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:45,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-06 22:34:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446503600] [2023-11-06 22:34:45,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:45,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:34:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:34:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:34:45,113 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 22:34:47,628 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 22:34:49,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:34:52,137 WARN L539 Checker$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 22:34:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:52,350 INFO L93 Difference]: Finished difference Result 686 states and 873 transitions. [2023-11-06 22:34:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:34:52,351 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 22:34:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:52,355 INFO L225 Difference]: With dead ends: 686 [2023-11-06 22:34:52,355 INFO L226 Difference]: Without dead ends: 686 [2023-11-06 22:34:52,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:34:52,356 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 318 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:52,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 238 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 226 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-06 22:34:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-06 22:34:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 415. [2023-11-06 22:34:52,375 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 22:34:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 537 transitions. [2023-11-06 22:34:52,378 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 537 transitions. Word has length 35 [2023-11-06 22:34:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:52,378 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 537 transitions. [2023-11-06 22:34:52,378 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 22:34:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 537 transitions. [2023-11-06 22:34:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:34:52,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:52,380 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 22:34:52,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:52,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:52,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:52,791 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 22:34:52,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2138169994, now seen corresponding path program 1 times [2023-11-06 22:34:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:52,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741393226] [2023-11-06 22:34:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:52,792 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 22:34:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:52,793 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:52,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:34:52,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:53,310 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 22:34:53,314 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 22:34:53,374 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 22:34:53,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:55,097 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-06 22:34:55,098 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 22:34:55,118 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:34:55,118 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 22:34:55,153 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 22:34:55,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741393226] [2023-11-06 22:34:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741393226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:55,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:55,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-06 22:34:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350407503] [2023-11-06 22:34:55,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:34:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:34:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:34:55,155 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 22:34:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:55,617 INFO L93 Difference]: Finished difference Result 494 states and 624 transitions. [2023-11-06 22:34:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:34:55,618 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 22:34:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:55,621 INFO L225 Difference]: With dead ends: 494 [2023-11-06 22:34:55,621 INFO L226 Difference]: Without dead ends: 494 [2023-11-06 22:34:55,621 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 22:34:55,622 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 193 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:55,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 326 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:34:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-06 22:34:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 433. [2023-11-06 22:34:55,636 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 22:34:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 555 transitions. [2023-11-06 22:34:55,639 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 555 transitions. Word has length 39 [2023-11-06 22:34:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:55,640 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 555 transitions. [2023-11-06 22:34:55,640 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 22:34:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 555 transitions. [2023-11-06 22:34:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:34:55,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:55,642 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 22:34:55,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:55,853 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 22:34:55,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1858113804, now seen corresponding path program 1 times [2023-11-06 22:34:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914194837] [2023-11-06 22:34:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:55,853 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 22:34:55,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:55,854 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:55,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:55,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:34:55,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:56,036 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 22:34:56,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:56,103 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 22:34:56,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914194837] [2023-11-06 22:34:56,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914194837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:56,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:56,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-06 22:34:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770829924] [2023-11-06 22:34:56,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:56,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:56,106 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 22:34:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:56,147 INFO L93 Difference]: Finished difference Result 431 states and 551 transitions. [2023-11-06 22:34:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:34:56,148 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 22:34:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:56,150 INFO L225 Difference]: With dead ends: 431 [2023-11-06 22:34:56,150 INFO L226 Difference]: Without dead ends: 431 [2023-11-06 22:34:56,151 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 22:34:56,151 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 22:34:56,152 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 22:34:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-06 22:34:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2023-11-06 22:34:56,164 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 22:34:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 551 transitions. [2023-11-06 22:34:56,167 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 551 transitions. Word has length 40 [2023-11-06 22:34:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:56,168 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 551 transitions. [2023-11-06 22:34:56,168 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 22:34:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 551 transitions. [2023-11-06 22:34:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:34:56,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:56,169 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 22:34:56,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:56,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:56,381 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 22:34:56,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1766952978, now seen corresponding path program 1 times [2023-11-06 22:34:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517617556] [2023-11-06 22:34:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:56,382 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 22:34:56,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:56,383 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:56,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:56,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:34:56,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:56,731 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 22:34:56,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:56,865 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 22:34:56,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517617556] [2023-11-06 22:34:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517617556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:56,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:34:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608340493] [2023-11-06 22:34:56,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:34:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:56,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:34:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:34:56,868 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 22:34:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:57,049 INFO L93 Difference]: Finished difference Result 378 states and 468 transitions. [2023-11-06 22:34:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:34:57,050 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 22:34:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:57,052 INFO L225 Difference]: With dead ends: 378 [2023-11-06 22:34:57,052 INFO L226 Difference]: Without dead ends: 378 [2023-11-06 22:34:57,053 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 22:34:57,053 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:57,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 149 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:34:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-06 22:34:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 356. [2023-11-06 22:34:57,064 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 22:34:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 449 transitions. [2023-11-06 22:34:57,066 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 449 transitions. Word has length 41 [2023-11-06 22:34:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:57,067 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 449 transitions. [2023-11-06 22:34:57,067 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 22:34:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 449 transitions. [2023-11-06 22:34:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:34:57,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:57,068 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 22:34:57,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:57,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:57,280 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 22:34:57,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1059032630, now seen corresponding path program 1 times [2023-11-06 22:34:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339580077] [2023-11-06 22:34:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,282 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 22:34:57,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:57,283 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:57,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:57,418 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 22:34:57,521 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:34:57,521 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 22:34:57,552 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 22:34:57,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:57,686 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 22:34:57,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339580077] [2023-11-06 22:34:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339580077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:57,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:57,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-06 22:34:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551946826] [2023-11-06 22:34:57,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:57,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:57,688 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 22:34:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:57,881 INFO L93 Difference]: Finished difference Result 383 states and 468 transitions. [2023-11-06 22:34:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:57,882 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 22:34:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:57,884 INFO L225 Difference]: With dead ends: 383 [2023-11-06 22:34:57,884 INFO L226 Difference]: Without dead ends: 383 [2023-11-06 22:34:57,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 2 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 22:34:57,885 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 22:34:57,885 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 22:34:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-06 22:34:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 364. [2023-11-06 22:34:57,895 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 22:34:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 457 transitions. [2023-11-06 22:34:57,897 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 457 transitions. Word has length 42 [2023-11-06 22:34:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:57,897 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 457 transitions. [2023-11-06 22:34:57,898 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 22:34:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 457 transitions. [2023-11-06 22:34:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 22:34:57,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:57,899 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 22:34:57,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,112 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 22:34:58,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -229956782, now seen corresponding path program 1 times [2023-11-06 22:34:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:58,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262672103] [2023-11-06 22:34:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:58,113 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 22:34:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:58,114 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:58,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:34:58,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:58,300 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 22:34:58,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:58,421 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 22:34:58,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262672103] [2023-11-06 22:34:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262672103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:58,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:58,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:34:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60523382] [2023-11-06 22:34:58,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:34:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:34:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:34:58,423 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 22:34:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:58,532 INFO L93 Difference]: Finished difference Result 365 states and 427 transitions. [2023-11-06 22:34:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:58,533 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 22:34:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:58,536 INFO L225 Difference]: With dead ends: 365 [2023-11-06 22:34:58,536 INFO L226 Difference]: Without dead ends: 365 [2023-11-06 22:34:58,536 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 22:34:58,537 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 114 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:58,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 328 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:34:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-06 22:34:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 313. [2023-11-06 22:34:58,563 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 22:34:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2023-11-06 22:34:58,565 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 44 [2023-11-06 22:34:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:58,566 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2023-11-06 22:34:58,566 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 22:34:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2023-11-06 22:34:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:34:58,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:58,567 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 22:34:58,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,767 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 22:34:58,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 629474045, now seen corresponding path program 1 times [2023-11-06 22:34:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:58,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706460393] [2023-11-06 22:34:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:58,768 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 22:34:58,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:58,769 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:58,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:34:58,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:58,876 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 22:34:58,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:58,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:34:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706460393] [2023-11-06 22:34:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706460393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650124241] [2023-11-06 22:34:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:58,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:34:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:58,878 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 22:34:58,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:58,899 INFO L93 Difference]: Finished difference Result 251 states and 287 transitions. [2023-11-06 22:34:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:58,900 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 22:34:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:58,901 INFO L225 Difference]: With dead ends: 251 [2023-11-06 22:34:58,901 INFO L226 Difference]: Without dead ends: 251 [2023-11-06 22:34:58,902 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 22:34:58,903 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 22:34:58,903 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 22:34:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-06 22:34:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-11-06 22:34:58,910 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 22:34:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 287 transitions. [2023-11-06 22:34:58,912 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 287 transitions. Word has length 47 [2023-11-06 22:34:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:58,912 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 287 transitions. [2023-11-06 22:34:58,912 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 22:34:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 287 transitions. [2023-11-06 22:34:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:34:58,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:58,913 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 22:34:58,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:59,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:59,126 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 22:34:59,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash 800966878, now seen corresponding path program 1 times [2023-11-06 22:34:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:34:59,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888499447] [2023-11-06 22:34:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:59,130 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 22:34:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:34:59,132 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:59,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:34:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:59,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:34:59,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:59,596 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:34:59,596 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 22:35:00,381 INFO L322 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2023-11-06 22:35:00,382 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 22:35:00,630 INFO L322 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2023-11-06 22:35:00,630 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 22:35:00,646 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 22:35:00,675 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 22:35:00,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:00,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888499447] [2023-11-06 22:35:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888499447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [725255868] [2023-11-06 22:35:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:35:00,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:35:00,846 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:35:00,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-06 22:35:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:35:01,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:01,388 INFO L322 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-06 22:35:01,389 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 22:35:01,651 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:35:01,651 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 22:35:01,728 INFO L322 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-06 22:35:01,728 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 22:35:01,841 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 22:35:01,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:01,933 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-06 22:35:01,933 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 22:35:04,583 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-06 22:35:04,583 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 22:35:05,044 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 22:35:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [725255868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:05,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:35:05,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 26 [2023-11-06 22:35:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704292919] [2023-11-06 22:35:05,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:05,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:35:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:35:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=662, Unknown=1, NotChecked=0, Total=812 [2023-11-06 22:35:05,047 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 22:35:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:06,164 INFO L93 Difference]: Finished difference Result 253 states and 289 transitions. [2023-11-06 22:35:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:35:06,165 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 22:35:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:06,166 INFO L225 Difference]: With dead ends: 253 [2023-11-06 22:35:06,166 INFO L226 Difference]: Without dead ends: 253 [2023-11-06 22:35:06,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=378, Invalid=1103, Unknown=1, NotChecked=0, Total=1482 [2023-11-06 22:35:06,168 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 272 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:06,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 106 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:35:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-06 22:35:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2023-11-06 22:35:06,175 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 22:35:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 286 transitions. [2023-11-06 22:35:06,177 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 286 transitions. Word has length 51 [2023-11-06 22:35:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:06,177 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 286 transitions. [2023-11-06 22:35:06,177 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 22:35:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 286 transitions. [2023-11-06 22:35:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:35:06,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:06,179 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 22:35:06,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:06,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:06,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:06,582 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 22:35:06,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash -26371320, now seen corresponding path program 1 times [2023-11-06 22:35:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:06,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467308358] [2023-11-06 22:35:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:06,584 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 22:35:06,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:06,585 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:06,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:06,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:35:06,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:06,893 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 22:35:06,970 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:35:06,970 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 22:35:07,035 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 22:35:07,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:07,468 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 22:35:07,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467308358] [2023-11-06 22:35:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467308358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:07,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:07,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-11-06 22:35:07,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525957861] [2023-11-06 22:35:07,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:07,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:35:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:35:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2023-11-06 22:35:07,470 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 22:35:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:08,003 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2023-11-06 22:35:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:35:08,004 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 22:35:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:08,006 INFO L225 Difference]: With dead ends: 266 [2023-11-06 22:35:08,006 INFO L226 Difference]: Without dead ends: 266 [2023-11-06 22:35:08,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=265, Unknown=1, NotChecked=36, Total=420 [2023-11-06 22:35:08,007 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 204 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 173 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2023-11-06 22:35:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-06 22:35:08,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 250. [2023-11-06 22:35:08,017 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 22:35:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 284 transitions. [2023-11-06 22:35:08,024 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 284 transitions. Word has length 52 [2023-11-06 22:35:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:08,024 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 284 transitions. [2023-11-06 22:35:08,025 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 22:35:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 284 transitions. [2023-11-06 22:35:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:35:08,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:08,026 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 22:35:08,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:08,241 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 22:35:08,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -939830577, now seen corresponding path program 1 times [2023-11-06 22:35:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765987530] [2023-11-06 22:35:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:08,243 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 22:35:08,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:08,244 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:08,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:08,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:35:08,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:08,849 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:35:08,850 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 22:35:10,025 INFO L322 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2023-11-06 22:35:10,025 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 22:35:10,256 INFO L322 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2023-11-06 22:35:10,257 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 22:35:10,374 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-06 22:35:10,375 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 22:35:10,509 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 22:35:10,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:10,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:10,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765987530] [2023-11-06 22:35:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765987530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603094230] [2023-11-06 22:35:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:10,883 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:35:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:35:10,884 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:35:10,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-11-06 22:35:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:11,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:35:11,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:11,631 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:35:11,632 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 22:35:12,460 INFO L322 Elim1Store]: treesize reduction 102, result has 23.3 percent of original size [2023-11-06 22:35:12,460 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 22:35:12,649 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-06 22:35:12,649 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 22:35:12,865 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 22:35:12,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603094230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:15,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 18 [2023-11-06 22:35:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449736786] [2023-11-06 22:35:15,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:35:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:35:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=513, Unknown=1, NotChecked=0, Total=600 [2023-11-06 22:35:15,473 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 22:35:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:17,982 INFO L93 Difference]: Finished difference Result 302 states and 332 transitions. [2023-11-06 22:35:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:35:17,982 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 22:35:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:17,984 INFO L225 Difference]: With dead ends: 302 [2023-11-06 22:35:17,984 INFO L226 Difference]: Without dead ends: 302 [2023-11-06 22:35:17,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=385, Invalid=1594, Unknown=1, NotChecked=0, Total=1980 [2023-11-06 22:35:17,986 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 393 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 223 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:35:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-06 22:35:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2023-11-06 22:35:17,994 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 22:35:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 284 transitions. [2023-11-06 22:35:17,995 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 284 transitions. Word has length 52 [2023-11-06 22:35:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:17,996 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 284 transitions. [2023-11-06 22:35:17,996 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 22:35:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 284 transitions. [2023-11-06 22:35:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:35:17,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:17,997 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 22:35:18,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:18,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:18,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:18,401 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 22:35:18,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash -817510871, now seen corresponding path program 1 times [2023-11-06 22:35:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137181041] [2023-11-06 22:35:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:18,402 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 22:35:18,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:18,403 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:18,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:18,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:35:18,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:18,830 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 22:35:18,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:35:18,895 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 22:35:18,999 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 22:35:18,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:19,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137181041] [2023-11-06 22:35:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137181041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1970264351] [2023-11-06 22:35:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:19,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:35:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:35:19,170 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:35:19,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-11-06 22:35:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:19,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:35:19,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:19,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:35:19,837 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 22:35:19,907 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 22:35:19,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:20,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1970264351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:20,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:20,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-06 22:35:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510858664] [2023-11-06 22:35:20,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:20,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:35:20,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:35:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:35:20,051 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 22:35:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:20,666 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2023-11-06 22:35:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:35:20,667 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 22:35:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:20,668 INFO L225 Difference]: With dead ends: 273 [2023-11-06 22:35:20,669 INFO L226 Difference]: Without dead ends: 273 [2023-11-06 22:35:20,669 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 22:35:20,670 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:20,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 129 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 99 Invalid, 0 Unknown, 90 Unchecked, 0.3s Time] [2023-11-06 22:35:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-06 22:35:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2023-11-06 22:35:20,677 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 22:35:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions. [2023-11-06 22:35:20,678 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 53 [2023-11-06 22:35:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:20,679 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 290 transitions. [2023-11-06 22:35:20,679 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 22:35:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions. [2023-11-06 22:35:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:35:20,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:20,680 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 22:35:20,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:20,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:35:21,090 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 22:35:21,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1234050895, now seen corresponding path program 1 times [2023-11-06 22:35:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:21,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135104017] [2023-11-06 22:35:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:21,091 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 22:35:21,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:21,092 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/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 22:35:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:21,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:35:21,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:21,427 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:35:21,427 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 22:35:21,896 INFO L322 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2023-11-06 22:35:21,896 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 22:35:22,027 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 22:35:22,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:26,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135104017] [2023-11-06 22:35:26,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135104017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1335757725] [2023-11-06 22:35:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:26,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:35:26,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:35:26,255 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:35:26,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a72b5a22-2f12-42c8-9e45-d67b401f1def/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-11-06 22:35:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:26,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:35:26,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:27,010 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:35:27,011 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 22:35:31,235 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 22:35:31,320 INFO L322 Elim1Store]: treesize reduction 46, result has 36.1 percent of original size [2023-11-06 22:35:31,320 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 22:35:31,471 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 22:35:31,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1335757725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:31,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-06 22:35:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145835205] [2023-11-06 22:35:31,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:35:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:35:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=429, Unknown=5, NotChecked=42, Total=552 [2023-11-06 22:35:31,622 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 22:35:37,739 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 22:35:39,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:35:41,749 WARN L539 Checker$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 22:35:43,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:35:45,760 WARN L539 Checker$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 22:35:47,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:35:49,784 WARN L539 Checker$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 22:35:51,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:35:53,800 WARN L539 Checker$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 22:35:55,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:35:57,808 WARN L539 Checker$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 22:35:59,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:01,825 WARN L539 Checker$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 22:36:03,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:05,833 WARN L539 Checker$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 22:36:07,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:09,840 WARN L539 Checker$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 22:36:11,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:13,851 WARN L539 Checker$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 22:36:15,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:17,866 WARN L539 Checker$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 22:36:19,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:21,889 WARN L539 Checker$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 22:36:23,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:25,895 WARN L539 Checker$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 22:36:27,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:29,907 WARN L539 Checker$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 22:36:31,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:36:33,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]