./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/array14_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/array14_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:56:40,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:56:40,714 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-08 16:56:40,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:56:40,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:56:40,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:56:40,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:56:40,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:56:40,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:56:40,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:56:40,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:56:40,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:56:40,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:56:40,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:56:40,759 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:56:40,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:56:40,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:56:40,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:56:40,765 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:56:40,766 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:56:40,766 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:56:40,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:56:40,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:56:40,767 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:56:40,767 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:56:40,767 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:56:40,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:56:40,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:56:40,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:56:40,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:56:40,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:56:40,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:56:40,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:56:40,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:56:40,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:56:40,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:56:40,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:56:40,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:56:40,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:56:40,774 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_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad [2024-11-08 16:56:41,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:56:41,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:56:41,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:56:41,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:56:41,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:56:41,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/termination-15/array14_alloca.i Unable to find full path for "g++" [2024-11-08 16:56:43,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:56:43,489 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:56:43,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/sv-benchmarks/c/termination-15/array14_alloca.i [2024-11-08 16:56:43,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/data/3450a470b/a7094f99f76b41be84b74b5ab6693d64/FLAG29c2d74f7 [2024-11-08 16:56:43,817 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/data/3450a470b/a7094f99f76b41be84b74b5ab6693d64 [2024-11-08 16:56:43,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:56:43,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:56:43,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:56:43,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:56:43,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:56:43,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:56:43" (1/1) ... [2024-11-08 16:56:43,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d37c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:43, skipping insertion in model container [2024-11-08 16:56:43,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:56:43" (1/1) ... [2024-11-08 16:56:43,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:56:44,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:56:44,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:56:44,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:56:44,384 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:56:44,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44 WrapperNode [2024-11-08 16:56:44,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:56:44,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:56:44,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:56:44,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:56:44,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,438 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-08 16:56:44,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:56:44,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:56:44,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:56:44,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:56:44,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,477 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-08 16:56:44,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:56:44,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:56:44,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:56:44,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:56:44,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (1/1) ... [2024-11-08 16:56:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:56:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:44,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:44,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:56:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:56:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:56:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:56:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:56:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:56:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:56:44,681 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:56:44,683 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:56:44,927 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-08 16:56:44,928 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:56:44,940 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:56:44,940 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:56:44,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:44 BoogieIcfgContainer [2024-11-08 16:56:44,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:56:44,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:56:44,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:56:44,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:56:44,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:56:43" (1/3) ... [2024-11-08 16:56:44,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58433b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:56:44, skipping insertion in model container [2024-11-08 16:56:44,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:44" (2/3) ... [2024-11-08 16:56:44,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58433b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:56:44, skipping insertion in model container [2024-11-08 16:56:44,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:44" (3/3) ... [2024-11-08 16:56:44,954 INFO L112 eAbstractionObserver]: Analyzing ICFG array14_alloca.i [2024-11-08 16:56:44,972 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:56:44,972 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-08 16:56:45,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:56:45,020 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2b6bf3fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:56:45,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-08 16:56:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 16:56:45,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:45,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 16:56:45,036 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:45,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 889508767, now seen corresponding path program 1 times [2024-11-08 16:56:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656596406] [2024-11-08 16:56:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656596406] [2024-11-08 16:56:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656596406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:45,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:45,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:56:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424561129] [2024-11-08 16:56:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:45,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:56:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:56:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:56:45,401 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:45,477 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-08 16:56:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:56:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-08 16:56:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:45,489 INFO L225 Difference]: With dead ends: 31 [2024-11-08 16:56:45,490 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 16:56:45,492 INFO L431 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 [2024-11-08 16:56:45,496 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:45,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:56:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 16:56:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-08 16:56:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.75) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-08 16:56:45,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 6 [2024-11-08 16:56:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:45,536 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-08 16:56:45,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-08 16:56:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:56:45,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:45,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:45,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:56:45,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:45,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 119445453, now seen corresponding path program 1 times [2024-11-08 16:56:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145983345] [2024-11-08 16:56:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145983345] [2024-11-08 16:56:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145983345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:45,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:45,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:56:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979944246] [2024-11-08 16:56:45,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:45,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:56:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:56:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:56:45,699 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:45,743 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-11-08 16:56:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:56:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 16:56:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:45,746 INFO L225 Difference]: With dead ends: 25 [2024-11-08 16:56:45,747 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 16:56:45,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:56:45,749 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:45,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 16:56:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 16:56:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-08 16:56:45,758 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 8 [2024-11-08 16:56:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:45,759 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-08 16:56:45,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-08 16:56:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:56:45,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:45,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:45,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:56:45,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:45,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 119445454, now seen corresponding path program 1 times [2024-11-08 16:56:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:45,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651290754] [2024-11-08 16:56:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:45,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651290754] [2024-11-08 16:56:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651290754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:46,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:46,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:56:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624281213] [2024-11-08 16:56:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:46,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:56:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:56:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:56:46,304 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:46,556 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-08 16:56:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:56:46,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 16:56:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:46,559 INFO L225 Difference]: With dead ends: 52 [2024-11-08 16:56:46,561 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 16:56:46,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:56:46,564 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:46,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 81 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:56:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 16:56:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 34. [2024-11-08 16:56:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-08 16:56:46,581 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 8 [2024-11-08 16:56:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:46,581 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-08 16:56:46,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-08 16:56:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:56:46,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:46,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:46,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:56:46,585 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:46,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 176703756, now seen corresponding path program 1 times [2024-11-08 16:56:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:46,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748967438] [2024-11-08 16:56:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748967438] [2024-11-08 16:56:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748967438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:46,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:56:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626408834] [2024-11-08 16:56:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:46,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:56:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:56:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:56:46,991 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:47,108 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2024-11-08 16:56:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:56:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 16:56:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:47,111 INFO L225 Difference]: With dead ends: 42 [2024-11-08 16:56:47,111 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 16:56:47,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:56:47,113 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:47,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 22 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:56:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 16:56:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-11-08 16:56:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-08 16:56:47,124 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 8 [2024-11-08 16:56:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:47,125 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-08 16:56:47,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-08 16:56:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 16:56:47,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:47,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:47,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:56:47,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:47,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1170002330, now seen corresponding path program 1 times [2024-11-08 16:56:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590314277] [2024-11-08 16:56:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590314277] [2024-11-08 16:56:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590314277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120436004] [2024-11-08 16:56:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:47,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:47,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:47,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:56:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:47,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:47,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:47,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:56:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120436004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:47,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:56:47,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:56:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720678751] [2024-11-08 16:56:47,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:47,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:56:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:56:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:56:47,473 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:47,548 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-11-08 16:56:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:56:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 16:56:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:47,550 INFO L225 Difference]: With dead ends: 49 [2024-11-08 16:56:47,550 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 16:56:47,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:56:47,551 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:47,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 54 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:56:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 16:56:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2024-11-08 16:56:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-08 16:56:47,556 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 15 [2024-11-08 16:56:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:47,557 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-08 16:56:47,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-08 16:56:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 16:56:47,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:47,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:47,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:56:47,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:47,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:47,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1756808344, now seen corresponding path program 1 times [2024-11-08 16:56:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:47,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540757504] [2024-11-08 16:56:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540757504] [2024-11-08 16:56:48,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540757504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738995600] [2024-11-08 16:56:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:48,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:48,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:48,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:48,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:56:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:48,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:56:48,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:48,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 16:56:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:48,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:49,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738995600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:49,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:49,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-08 16:56:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404904310] [2024-11-08 16:56:49,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:49,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:56:49,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:56:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:56:49,322 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:49,677 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-08 16:56:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:56:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 16:56:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:49,678 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:56:49,678 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 16:56:49,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2024-11-08 16:56:49,680 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:49,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 67 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:56:49,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 16:56:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2024-11-08 16:56:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.25) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-08 16:56:49,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 15 [2024-11-08 16:56:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:49,686 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-08 16:56:49,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-08 16:56:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:56:49,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:49,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:49,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:49,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:49,892 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:49,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 932021169, now seen corresponding path program 1 times [2024-11-08 16:56:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886233583] [2024-11-08 16:56:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886233583] [2024-11-08 16:56:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886233583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:49,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:56:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776742201] [2024-11-08 16:56:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:49,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:56:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:56:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:56:49,976 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:50,026 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-08 16:56:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:56:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 16:56:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:50,027 INFO L225 Difference]: With dead ends: 38 [2024-11-08 16:56:50,027 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 16:56:50,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:56:50,028 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:50,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 16:56:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-08 16:56:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-08 16:56:50,036 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2024-11-08 16:56:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:50,036 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-08 16:56:50,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-08 16:56:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:56:50,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:50,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:50,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:56:50,041 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:50,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 932005378, now seen corresponding path program 1 times [2024-11-08 16:56:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136271164] [2024-11-08 16:56:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136271164] [2024-11-08 16:56:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136271164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288149590] [2024-11-08 16:56:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:50,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:50,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:56:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:50,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:56:50,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:50,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:50,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-08 16:56:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288149590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:50,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:50,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-08 16:56:50,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469207659] [2024-11-08 16:56:50,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:50,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:56:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:50,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:56:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:56:50,541 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:50,677 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-11-08 16:56:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:56:50,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 16:56:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:50,680 INFO L225 Difference]: With dead ends: 45 [2024-11-08 16:56:50,684 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 16:56:50,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:56:50,685 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:50,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 48 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:56:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 16:56:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2024-11-08 16:56:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-08 16:56:50,695 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 17 [2024-11-08 16:56:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:50,699 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-08 16:56:50,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-08 16:56:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 16:56:50,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:50,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:50,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:56:50,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:50,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:50,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2087317401, now seen corresponding path program 1 times [2024-11-08 16:56:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42475694] [2024-11-08 16:56:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:56:51,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:51,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42475694] [2024-11-08 16:56:51,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42475694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:56:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807202035] [2024-11-08 16:56:51,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:51,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:56:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:56:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:56:51,049 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:51,070 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2024-11-08 16:56:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:56:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 16:56:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:51,071 INFO L225 Difference]: With dead ends: 36 [2024-11-08 16:56:51,071 INFO L226 Difference]: Without dead ends: 34 [2024-11-08 16:56:51,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:56:51,072 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:51,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-08 16:56:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-08 16:56:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-08 16:56:51,076 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 21 [2024-11-08 16:56:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:51,077 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-08 16:56:51,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-08 16:56:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 16:56:51,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:51,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:51,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:56:51,078 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:51,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2087333192, now seen corresponding path program 1 times [2024-11-08 16:56:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719496168] [2024-11-08 16:56:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:51,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719496168] [2024-11-08 16:56:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719496168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044962028] [2024-11-08 16:56:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:51,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:51,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:51,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:56:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:51,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:56:51,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:51,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:56:51,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044962028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:51,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:56:51,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-08 16:56:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610416394] [2024-11-08 16:56:51,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:51,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:56:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:56:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:56:51,240 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:51,262 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-08 16:56:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:56:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 16:56:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:51,263 INFO L225 Difference]: With dead ends: 36 [2024-11-08 16:56:51,264 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 16:56:51,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:56:51,265 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:51,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 16:56:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-08 16:56:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-08 16:56:51,269 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 21 [2024-11-08 16:56:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:51,270 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-08 16:56:51,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-08 16:56:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 16:56:51,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:51,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:51,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:51,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:56:51,475 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:51,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2087273610, now seen corresponding path program 1 times [2024-11-08 16:56:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760787417] [2024-11-08 16:56:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760787417] [2024-11-08 16:56:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760787417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:51,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375996693] [2024-11-08 16:56:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:51,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:51,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:51,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:51,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:56:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:51,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:51,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:51,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:56:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375996693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:51,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:56:51,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-08 16:56:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292501502] [2024-11-08 16:56:51,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:51,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:56:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:56:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:56:51,810 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:51,848 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-08 16:56:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:56:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 16:56:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:51,849 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:56:51,849 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 16:56:51,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:56:51,850 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:51,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 16:56:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 16:56:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-08 16:56:51,854 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 21 [2024-11-08 16:56:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:51,854 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-08 16:56:51,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-08 16:56:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 16:56:51,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:51,855 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:51,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:56:52,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:56:52,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-08 16:56:52,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash 518749944, now seen corresponding path program 1 times [2024-11-08 16:56:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:52,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844781079] [2024-11-08 16:56:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:56:52,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844781079] [2024-11-08 16:56:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844781079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961627596] [2024-11-08 16:56:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:52,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:52,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:52,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:52,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:56:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:52,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:56:52,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:52,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:52,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961627596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:52,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:52,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-08 16:56:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432535466] [2024-11-08 16:56:52,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:52,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 16:56:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 16:56:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:56:52,443 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:52,740 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-11-08 16:56:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:56:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 16:56:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:52,742 INFO L225 Difference]: With dead ends: 44 [2024-11-08 16:56:52,742 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 16:56:52,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:56:52,743 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:52,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 48 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:56:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 16:56:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 16:56:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 16:56:52,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-08 16:56:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:52,745 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 16:56:52,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 16:56:52,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 16:56:52,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-08 16:56:52,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-08 16:56:52,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-08 16:56:52,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-08 16:56:52,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-08 16:56:52,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-08 16:56:52,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-08 16:56:52,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-08 16:56:52,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-08 16:56:52,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:56:52,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:56:52,958 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:52,961 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:56:52,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:56:52 BoogieIcfgContainer [2024-11-08 16:56:52,964 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:56:52,967 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:56:52,967 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:56:52,967 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:56:52,969 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:44" (3/4) ... [2024-11-08 16:56:52,972 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 16:56:52,982 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-08 16:56:52,983 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 16:56:52,983 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 16:56:52,983 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 16:56:53,113 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 16:56:53,113 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 16:56:53,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:56:53,114 INFO L158 Benchmark]: Toolchain (without parser) took 9293.72ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 102.8MB in the beginning and 159.0MB in the end (delta: -56.2MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,115 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 107.2MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:56:53,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.37ms. Allocated memory is still 138.4MB. Free memory was 102.8MB in the beginning and 82.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.92ms. Allocated memory is still 138.4MB. Free memory was 82.4MB in the beginning and 80.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,116 INFO L158 Benchmark]: Boogie Preprocessor took 67.01ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,117 INFO L158 Benchmark]: RCFGBuilder took 431.55ms. Allocated memory is still 138.4MB. Free memory was 78.7MB in the beginning and 65.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,118 INFO L158 Benchmark]: TraceAbstraction took 8020.58ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 64.5MB in the beginning and 56.7MB in the end (delta: 7.8MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,118 INFO L158 Benchmark]: Witness Printer took 146.90ms. Allocated memory is still 190.8MB. Free memory was 56.7MB in the beginning and 159.0MB in the end (delta: -102.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2024-11-08 16:56:53,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 107.2MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.37ms. Allocated memory is still 138.4MB. Free memory was 102.8MB in the beginning and 82.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.92ms. Allocated memory is still 138.4MB. Free memory was 82.4MB in the beginning and 80.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.01ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.55ms. Allocated memory is still 138.4MB. Free memory was 78.7MB in the beginning and 65.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8020.58ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 64.5MB in the beginning and 56.7MB in the end (delta: 7.8MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. * Witness Printer took 146.90ms. Allocated memory is still 190.8MB. Free memory was 56.7MB in the beginning and 159.0MB in the end (delta: -102.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 364]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 509 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 307 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 713 IncrementalHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 202 mSDtfsCounter, 713 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=5, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 2508 SizeOfPredicates, 12 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 29/49 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 16:56:53,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80087d86-63df-454a-9f38-78aa71d007dc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE