./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu --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 32bit --witnessprinter.graph.data.programhash 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:23,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:23,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:01:23,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:23,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:23,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:23,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:23,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:23,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:23,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:23,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:23,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:23,686 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:23,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:23,689 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:23,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:23,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:23,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:23,690 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:23,691 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:23,691 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:01:23,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:23,692 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:23,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:23,693 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:23,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:23,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:23,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:23,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:23,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:23,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:23,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:23,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:23,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:23,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:23,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:23,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:23,709 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:23,710 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_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2023-11-19 08:01:24,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:24,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:24,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:24,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:24,130 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:24,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-acceleration/array_3-1.i [2023-11-19 08:01:27,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:27,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:27,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/sv-benchmarks/c/loop-acceleration/array_3-1.i [2023-11-19 08:01:27,507 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/data/93bc9cb97/cc2dfb04de0840e9bee6fe5603146d57/FLAGdcbad8032 [2023-11-19 08:01:27,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/data/93bc9cb97/cc2dfb04de0840e9bee6fe5603146d57 [2023-11-19 08:01:27,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:27,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:27,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:27,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:27,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:27,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523eecce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27, skipping insertion in model container [2023-11-19 08:01:27,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:27,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:27,760 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:27,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:27,798 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:27,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27 WrapperNode [2023-11-19 08:01:27,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:27,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:27,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:27,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:27,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,838 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-11-19 08:01:27,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:27,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:27,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:27,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:27,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:27,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:27,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:27,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:27,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (1/1) ... [2023-11-19 08:01:27,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:27,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:27,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:28,035 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:28,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:28,222 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:28,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:28,230 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:01:28,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:28 BoogieIcfgContainer [2023-11-19 08:01:28,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:28,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:28,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:28,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:28,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:27" (1/3) ... [2023-11-19 08:01:28,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd32c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:28, skipping insertion in model container [2023-11-19 08:01:28,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:27" (2/3) ... [2023-11-19 08:01:28,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd32c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:28, skipping insertion in model container [2023-11-19 08:01:28,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:28" (3/3) ... [2023-11-19 08:01:28,244 INFO L112 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2023-11-19 08:01:28,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:28,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 08:01:28,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:28,309 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;@3941924c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:28,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 08:01:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.65) internal successors, (33), 26 states have internal predecessors, (33), 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) [2023-11-19 08:01:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:01:28,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:28,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:01:28,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:28,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-11-19 08:01:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140606286] [2023-11-19 08:01:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140606286] [2023-11-19 08:01:28,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140606286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:28,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:28,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046715288] [2023-11-19 08:01:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:28,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:28,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:28,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:28,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:28,649 INFO L87 Difference]: Start difference. First operand has 27 states, 20 states have (on average 1.65) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:28,689 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-19 08:01:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:28,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 08:01:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:28,702 INFO L225 Difference]: With dead ends: 24 [2023-11-19 08:01:28,702 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 08:01:28,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:28,708 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 08:01:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-19 08:01:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 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) [2023-11-19 08:01:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-19 08:01:28,746 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2023-11-19 08:01:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-19 08:01:28,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-19 08:01:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:01:28,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:28,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:01:28,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:28,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:28,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,749 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-11-19 08:01:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409267064] [2023-11-19 08:01:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:28,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:28,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409267064] [2023-11-19 08:01:28,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409267064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:28,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:28,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504878587] [2023-11-19 08:01:28,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:28,898 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:28,940 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-11-19 08:01:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:28,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 08:01:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:28,942 INFO L225 Difference]: With dead ends: 26 [2023-11-19 08:01:28,942 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 08:01:28,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:28,945 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:28,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 08:01:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-11-19 08:01:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 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) [2023-11-19 08:01:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-19 08:01:28,952 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 4 [2023-11-19 08:01:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:28,952 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-19 08:01:28,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-19 08:01:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 08:01:28,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:28,953 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:28,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:28,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:28,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2023-11-19 08:01:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401873050] [2023-11-19 08:01:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401873050] [2023-11-19 08:01:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401873050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482509200] [2023-11-19 08:01:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:29,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:29,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:01:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:29,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:01:29,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:29,526 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 [2023-11-19 08:01:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482509200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:29,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:29,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-19 08:01:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42606218] [2023-11-19 08:01:29,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:29,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:01:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:01:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:29,804 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2023-11-19 08:01:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:30,027 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2023-11-19 08:01:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) Word has length 8 [2023-11-19 08:01:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:30,035 INFO L225 Difference]: With dead ends: 65 [2023-11-19 08:01:30,035 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 08:01:30,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:01:30,038 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 100 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:30,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 72 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:01:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 08:01:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2023-11-19 08:01:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-19 08:01:30,049 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 8 [2023-11-19 08:01:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:30,050 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-19 08:01:30,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2023-11-19 08:01:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-19 08:01:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 08:01:30,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:30,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:30,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:30,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash -383313326, now seen corresponding path program 1 times [2023-11-19 08:01:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520718171] [2023-11-19 08:01:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520718171] [2023-11-19 08:01:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520718171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690984669] [2023-11-19 08:01:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:30,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:30,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:30,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:30,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:01:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:30,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:30,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690984669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:30,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:30,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-19 08:01:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860051205] [2023-11-19 08:01:30,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:01:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:01:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:01:30,848 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:31,043 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2023-11-19 08:01:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:01:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 08:01:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:31,046 INFO L225 Difference]: With dead ends: 173 [2023-11-19 08:01:31,046 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 08:01:31,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:01:31,049 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 246 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:31,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 117 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:01:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 08:01:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 92. [2023-11-19 08:01:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2023-11-19 08:01:31,073 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 26 [2023-11-19 08:01:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:31,074 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2023-11-19 08:01:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2023-11-19 08:01:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 08:01:31,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:31,076 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:31,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:31,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:31,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:31,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2088503964, now seen corresponding path program 2 times [2023-11-19 08:01:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:31,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232465910] [2023-11-19 08:01:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232465910] [2023-11-19 08:01:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232465910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:31,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711541196] [2023-11-19 08:01:31,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:01:31,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:31,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:31,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:31,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:31,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:01:31,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:31,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:01:31,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:32,132 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#A~0#1.base_14| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_14| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_14|) 0))) is different from true [2023-11-19 08:01:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 08:01:32,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711541196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2023-11-19 08:01:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742197058] [2023-11-19 08:01:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:32,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=103, Unknown=1, NotChecked=24, Total=210 [2023-11-19 08:01:32,138 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 08:01:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:32,167 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2023-11-19 08:01:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 50 [2023-11-19 08:01:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:32,183 INFO L225 Difference]: With dead ends: 91 [2023-11-19 08:01:32,183 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:01:32,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=103, Unknown=1, NotChecked=24, Total=210 [2023-11-19 08:01:32,184 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:32,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2023-11-19 08:01:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:01:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-19 08:01:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 88 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2023-11-19 08:01:32,194 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 50 [2023-11-19 08:01:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2023-11-19 08:01:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 08:01:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2023-11-19 08:01:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 08:01:32,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:32,203 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:32,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:32,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:32,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:32,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -319514469, now seen corresponding path program 1 times [2023-11-19 08:01:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911112146] [2023-11-19 08:01:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 08:01:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911112146] [2023-11-19 08:01:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911112146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:32,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:32,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102505906] [2023-11-19 08:01:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:32,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:32,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:32,572 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-19 08:01:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:32,618 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2023-11-19 08:01:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 51 [2023-11-19 08:01:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:32,620 INFO L225 Difference]: With dead ends: 91 [2023-11-19 08:01:32,620 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:01:32,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:32,621 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:32,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:01:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-19 08:01:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 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) [2023-11-19 08:01:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2023-11-19 08:01:32,641 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 51 [2023-11-19 08:01:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:32,644 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2023-11-19 08:01:32,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-19 08:01:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2023-11-19 08:01:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 08:01:32,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:32,649 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:01:32,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-19 08:01:32,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1758216498, now seen corresponding path program 1 times [2023-11-19 08:01:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312568862] [2023-11-19 08:01:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 08:01:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312568862] [2023-11-19 08:01:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312568862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578586067] [2023-11-19 08:01:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:32,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:32,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:32,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:32,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:33,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:01:33,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:01:33,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:01:33,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578586067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:33,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 26 [2023-11-19 08:01:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255694847] [2023-11-19 08:01:33,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 08:01:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 08:01:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-19 08:01:33,585 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 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) [2023-11-19 08:01:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:34,380 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2023-11-19 08:01:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 08:01:34,381 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 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 55 [2023-11-19 08:01:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:34,382 INFO L225 Difference]: With dead ends: 221 [2023-11-19 08:01:34,382 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:01:34,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=806, Invalid=1356, Unknown=0, NotChecked=0, Total=2162 [2023-11-19 08:01:34,385 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 238 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:34,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 83 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:01:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:01:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:01:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:01:34,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2023-11-19 08:01:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:34,388 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 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) [2023-11-19 08:01:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:01:34,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:01:34,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-11-19 08:01:34,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-19 08:01:34,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-19 08:01:34,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-19 08:01:34,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-11-19 08:01:34,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-19 08:01:34,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:34,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:01:34,622 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-19 08:01:34,624 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:01:34,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:01:34 BoogieIcfgContainer [2023-11-19 08:01:34,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:01:34,632 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:01:34,632 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:01:34,632 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:01:34,632 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:28" (3/4) ... [2023-11-19 08:01:34,639 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:01:34,651 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 08:01:34,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 08:01:34,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:01:34,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 08:01:34,763 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:01:34,764 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:01:34,764 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:01:34,765 INFO L158 Benchmark]: Toolchain (without parser) took 7238.64ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 88.5MB in the beginning and 103.9MB in the end (delta: -15.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,765 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:34,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.78ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 78.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.58ms. Allocated memory is still 123.7MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,771 INFO L158 Benchmark]: Boogie Preprocessor took 38.34ms. Allocated memory is still 123.7MB. Free memory was 76.6MB in the beginning and 75.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:34,771 INFO L158 Benchmark]: RCFGBuilder took 355.17ms. Allocated memory is still 123.7MB. Free memory was 75.2MB in the beginning and 64.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,772 INFO L158 Benchmark]: TraceAbstraction took 6394.85ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 63.7MB in the beginning and 108.8MB in the end (delta: -45.1MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,772 INFO L158 Benchmark]: Witness Printer took 132.69ms. Allocated memory is still 169.9MB. Free memory was 108.8MB in the beginning and 103.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:01:34,777 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.78ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 78.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.58ms. Allocated memory is still 123.7MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.34ms. Allocated memory is still 123.7MB. Free memory was 76.6MB in the beginning and 75.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 355.17ms. Allocated memory is still 123.7MB. Free memory was 75.2MB in the beginning and 64.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6394.85ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 63.7MB in the beginning and 108.8MB in the end (delta: -45.1MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 132.69ms. Allocated memory is still 169.9MB. Free memory was 108.8MB in the beginning and 103.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 619 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 619 mSDsluCounter, 372 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 259 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 113 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 337 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 412 ConstructedInterpolants, 1 QuantifiedInterpolants, 1680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 574/1236 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:01:34,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7cd8b72-9673-4644-9c9c-b18c1e1f6dac/bin/uautomizer-verify-uCwYo4JHxu/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 Result: TRUE