./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx --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 fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:21,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:21,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-21 22:21:21,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:21,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:21,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:21,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:21,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:21,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:21,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:21,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:21,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:21,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:21,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:21,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:21,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:21,812 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:21:21,813 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:21:21,813 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:21:21,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:21,815 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:21:21,817 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:21:21,818 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:21,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:21,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:21,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:21,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:21,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:21,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:21,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:21,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:21,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:21,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:21,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:21,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:21,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:21,824 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_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c [2023-11-21 22:21:22,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:22,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:22,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:22,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:22,131 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:22,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2023-11-21 22:21:25,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:25,672 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:25,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2023-11-21 22:21:25,680 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/data/230f51d2c/6b65b0de5cc34aa2aa932392a85659a6/FLAGc46729339 [2023-11-21 22:21:25,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/data/230f51d2c/6b65b0de5cc34aa2aa932392a85659a6 [2023-11-21 22:21:25,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:25,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:25,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:25,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:25,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:25,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399735ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25, skipping insertion in model container [2023-11-21 22:21:25,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:25,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:25,896 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:25,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:25,925 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:25,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25 WrapperNode [2023-11-21 22:21:25,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:25,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:25,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:25,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:25,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,961 INFO L138 Inliner]: procedures = 8, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-11-21 22:21:25,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:25,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:25,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:25,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:25,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:25,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:25,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:25,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:25,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:26,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:26,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:21:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:21:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:21:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:21:26,157 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:26,160 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:26,384 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:26,425 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:26,425 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:21:26,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:26 BoogieIcfgContainer [2023-11-21 22:21:26,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:26,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:26,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:26,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:26,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:25" (1/3) ... [2023-11-21 22:21:26,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f6529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:26, skipping insertion in model container [2023-11-21 22:21:26,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (2/3) ... [2023-11-21 22:21:26,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f6529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:26, skipping insertion in model container [2023-11-21 22:21:26,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:26" (3/3) ... [2023-11-21 22:21:26,437 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTermination3-1.c [2023-11-21 22:21:26,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:26,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-21 22:21:26,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:26,505 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@537c56ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:26,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:21:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 2.1) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:21:26,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:26,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:21:26,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:26,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 82007, now seen corresponding path program 1 times [2023-11-21 22:21:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:26,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582226406] [2023-11-21 22:21:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582226406] [2023-11-21 22:21:26,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582226406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:26,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:26,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485532441] [2023-11-21 22:21:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:26,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:26,782 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 2.1) internal successors, (21), 17 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:26,828 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-21 22:21:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 22:21:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:26,839 INFO L225 Difference]: With dead ends: 15 [2023-11-21 22:21:26,839 INFO L226 Difference]: Without dead ends: 14 [2023-11-21 22:21:26,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:26,845 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:26,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-21 22:21:26,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-21 22:21:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-11-21 22:21:26,881 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 3 [2023-11-21 22:21:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:26,881 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-21 22:21:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-21 22:21:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:21:26,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:26,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:21:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:26,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:26,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 82008, now seen corresponding path program 1 times [2023-11-21 22:21:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:26,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23848173] [2023-11-21 22:21:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23848173] [2023-11-21 22:21:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23848173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:27,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812525979] [2023-11-21 22:21:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:27,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:27,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:27,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:27,122 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:27,151 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-21 22:21:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:27,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 22:21:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:27,153 INFO L225 Difference]: With dead ends: 16 [2023-11-21 22:21:27,153 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 22:21:27,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:27,156 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 22:21:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 22:21:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-21 22:21:27,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 3 [2023-11-21 22:21:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:27,162 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-21 22:21:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-21 22:21:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:21:27,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:27,163 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2023-11-21 22:21:27,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:27,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 78851334, now seen corresponding path program 1 times [2023-11-21 22:21:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567831983] [2023-11-21 22:21:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567831983] [2023-11-21 22:21:27,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567831983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953587241] [2023-11-21 22:21:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:27,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:27,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:27,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:27,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:21:27,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:27,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:21:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:27,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:27,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953587241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:27,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:21:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-11-21 22:21:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871912831] [2023-11-21 22:21:27,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:21:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:21:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:21:27,871 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-11-21 22:21:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:28,040 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-21 22:21:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:21:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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 5 [2023-11-21 22:21:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:28,048 INFO L225 Difference]: With dead ends: 20 [2023-11-21 22:21:28,049 INFO L226 Difference]: Without dead ends: 20 [2023-11-21 22:21:28,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:21:28,055 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:28,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-21 22:21:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-21 22:21:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-21 22:21:28,063 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 5 [2023-11-21 22:21:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:28,064 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-21 22:21:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-11-21 22:21:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-21 22:21:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:21:28,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:28,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-11-21 22:21:28,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:28,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:28,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1078428561, now seen corresponding path program 1 times [2023-11-21 22:21:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:28,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658534440] [2023-11-21 22:21:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:21:28,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:28,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658534440] [2023-11-21 22:21:28,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658534440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:28,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:28,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:28,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320573866] [2023-11-21 22:21:28,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:28,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:28,623 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:28,677 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-21 22:21:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:21:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 13 [2023-11-21 22:21:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:28,679 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:21:28,679 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 22:21:28,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:28,688 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:28,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 22:21:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-11-21 22:21:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-21 22:21:28,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2023-11-21 22:21:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:28,700 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-21 22:21:28,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-21 22:21:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 22:21:28,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:28,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:28,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:28,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash 928459065, now seen corresponding path program 1 times [2023-11-21 22:21:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377747510] [2023-11-21 22:21:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:21:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377747510] [2023-11-21 22:21:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377747510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:28,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:28,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113194041] [2023-11-21 22:21:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:28,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:28,746 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-21 22:21:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:28,761 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-21 22:21:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:28,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 14 [2023-11-21 22:21:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:28,762 INFO L225 Difference]: With dead ends: 20 [2023-11-21 22:21:28,762 INFO L226 Difference]: Without dead ends: 20 [2023-11-21 22:21:28,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:28,763 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:28,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-21 22:21:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-21 22:21:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-21 22:21:28,767 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2023-11-21 22:21:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:28,768 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-21 22:21:28,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-21 22:21:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-21 22:21:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:21:28,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:28,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:28,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:21:28,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:28,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1282541806, now seen corresponding path program 1 times [2023-11-21 22:21:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271370161] [2023-11-21 22:21:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:28,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271370161] [2023-11-21 22:21:28,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271370161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465001263] [2023-11-21 22:21:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:28,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:28,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:28,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:21:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:28,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:21:28,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:28,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:29,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465001263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:29,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:21:29,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-21 22:21:29,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336856323] [2023-11-21 22:21:29,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:21:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:21:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:21:29,030 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:29,078 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-21 22:21:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:21:29,078 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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 [2023-11-21 22:21:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:29,079 INFO L225 Difference]: With dead ends: 32 [2023-11-21 22:21:29,079 INFO L226 Difference]: Without dead ends: 32 [2023-11-21 22:21:29,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:21:29,081 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:29,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-21 22:21:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-21 22:21:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-11-21 22:21:29,091 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2023-11-21 22:21:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:29,091 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-11-21 22:21:29,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-11-21 22:21:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 22:21:29,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:29,093 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:29,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:29,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:29,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:29,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash -865501018, now seen corresponding path program 2 times [2023-11-21 22:21:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:29,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684559862] [2023-11-21 22:21:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:29,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 22:21:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684559862] [2023-11-21 22:21:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684559862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:29,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:29,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431895543] [2023-11-21 22:21:29,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:29,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:29,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:29,504 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:29,541 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-21 22:21:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:29,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-21 22:21:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:29,542 INFO L225 Difference]: With dead ends: 31 [2023-11-21 22:21:29,542 INFO L226 Difference]: Without dead ends: 28 [2023-11-21 22:21:29,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:29,544 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:29,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-21 22:21:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-21 22:21:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-11-21 22:21:29,548 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 27 [2023-11-21 22:21:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-11-21 22:21:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-21 22:21:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 22:21:29,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:29,550 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:21:29,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-21 22:21:29,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -865666533, now seen corresponding path program 1 times [2023-11-21 22:21:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941225594] [2023-11-21 22:21:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:21:29,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:21:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:21:29,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:21:29,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:21:29,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-11-21 22:21:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-11-21 22:21:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-11-21 22:21:29,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-11-21 22:21:29,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2023-11-21 22:21:29,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2023-11-21 22:21:29,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-11-21 22:21:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:21:29,658 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:29,663 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:29,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 22:21:29,688 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated [2023-11-21 22:21:29,688 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated [2023-11-21 22:21:29,689 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-21 22:21:29,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:29 BoogieIcfgContainer [2023-11-21 22:21:29,697 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:29,698 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:29,698 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:29,698 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:29,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:26" (3/4) ... [2023-11-21 22:21:29,700 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 22:21:29,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 22:21:29,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated [2023-11-21 22:21:29,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-21 22:21:29,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated [2023-11-21 22:21:29,746 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:29,746 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:29,747 INFO L158 Benchmark]: Toolchain (without parser) took 4048.84ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 135.5MB in the beginning and 155.9MB in the end (delta: -20.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:29,747 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 165.7MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:29,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.52ms. Allocated memory is still 165.7MB. Free memory was 135.0MB in the beginning and 125.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:29,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:29,749 INFO L158 Benchmark]: Boogie Preprocessor took 27.73ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 123.0MB in the end (delta: 949.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:29,749 INFO L158 Benchmark]: RCFGBuilder took 435.88ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 109.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:21:29,750 INFO L158 Benchmark]: TraceAbstraction took 3267.50ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 109.2MB in the beginning and 158.0MB in the end (delta: -48.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:29,750 INFO L158 Benchmark]: Witness Printer took 48.53ms. Allocated memory is still 201.3MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:29,752 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 165.7MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.52ms. Allocated memory is still 165.7MB. Free memory was 135.0MB in the beginning and 125.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.73ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 123.0MB in the end (delta: 949.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 435.88ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 109.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3267.50ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 109.2MB in the beginning and 158.0MB in the end (delta: -48.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.53ms. Allocated memory is still 201.3MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short4 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; VAL [a={2:0}, i=0, n=0] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=1] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=2] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=3] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=4] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=5] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=6] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=7] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=8] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=9] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n VAL [a={2:0}, i=0, n=10] [L13] COND FALSE !(n < 10) [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [a={2:0}, i=0] [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [a={2:0}, i=0] [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 59 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=6, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 132/186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:21:29,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd3ab8cb-6d51-4a58-9eb8-715b72143db9/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)