./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/java_Break-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/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_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/java_Break-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/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 64bit --witnessprinter.graph.data.programhash 103924553f8844e2e517be0615203791d7df69423e0df1cd576bc344a47cd3cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:47,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:47,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-19 08:05:47,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:47,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:47,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:47,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:47,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:47,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:47,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:47,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:47,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:47,938 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:47,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:47,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:47,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:47,942 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:05:47,942 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:05:47,943 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:05:47,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:47,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:05:47,944 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:47,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:47,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:47,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:47,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:47,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:47,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:47,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:47,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:47,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:47,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:47,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:47,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:47,951 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:47,952 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_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103924553f8844e2e517be0615203791d7df69423e0df1cd576bc344a47cd3cc [2023-11-19 08:05:48,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:48,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:48,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:48,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:48,303 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:48,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-memory-alloca/java_Break-alloca.i [2023-11-19 08:05:51,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:51,817 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:51,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/sv-benchmarks/c/termination-memory-alloca/java_Break-alloca.i [2023-11-19 08:05:51,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/data/a83f43adc/b1ffc7a198174f90a19a544b3c1453c9/FLAGc08474fd3 [2023-11-19 08:05:51,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/data/a83f43adc/b1ffc7a198174f90a19a544b3c1453c9 [2023-11-19 08:05:51,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:51,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:51,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:51,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:51,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:51,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:51" (1/1) ... [2023-11-19 08:05:51,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5720374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:51, skipping insertion in model container [2023-11-19 08:05:51,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:51" (1/1) ... [2023-11-19 08:05:51,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:52,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:52,320 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:52,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:52,417 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:52,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52 WrapperNode [2023-11-19 08:05:52,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:52,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:52,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:52,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:52,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,467 INFO L138 Inliner]: procedures = 109, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-19 08:05:52,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:52,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:52,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:52,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:52,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:52,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:52,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:52,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:52,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2023-11-19 08:05:52,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:52,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:52,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:52,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:52,768 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:52,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:53,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:53,025 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:53,025 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:53,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:53 BoogieIcfgContainer [2023-11-19 08:05:53,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:53,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:53,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:53,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:53,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:51" (1/3) ... [2023-11-19 08:05:53,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168d57cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:53, skipping insertion in model container [2023-11-19 08:05:53,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (2/3) ... [2023-11-19 08:05:53,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168d57cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:53, skipping insertion in model container [2023-11-19 08:05:53,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:53" (3/3) ... [2023-11-19 08:05:53,040 INFO L112 eAbstractionObserver]: Analyzing ICFG java_Break-alloca.i [2023-11-19 08:05:53,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:53,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-19 08:05:53,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:53,124 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;@30454c3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:53,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:05:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 08:05:53,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:53,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 08:05:53,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:53,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-19 08:05:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606476928] [2023-11-19 08:05:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:53,580 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 08:05:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606476928] [2023-11-19 08:05:53,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606476928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:53,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:53,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214426120] [2023-11-19 08:05:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:53,646 INFO L87 Difference]: Start difference. First operand has 37 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:53,757 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2023-11-19 08:05:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:53,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 08:05:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:53,771 INFO L225 Difference]: With dead ends: 33 [2023-11-19 08:05:53,772 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 08:05:53,774 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 08:05:53,780 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:53,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:05:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 08:05:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-19 08:05:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2023-11-19 08:05:53,824 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 3 [2023-11-19 08:05:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:53,824 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2023-11-19 08:05:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2023-11-19 08:05:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 08:05:53,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:53,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 08:05:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:53,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:53,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-19 08:05:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363450947] [2023-11-19 08:05:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,061 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 08:05:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363450947] [2023-11-19 08:05:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363450947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061129022] [2023-11-19 08:05:54,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:54,066 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:54,111 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-11-19 08:05:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 08:05:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:54,113 INFO L225 Difference]: With dead ends: 27 [2023-11-19 08:05:54,114 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 08:05:54,119 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 08:05:54,121 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:54,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 08:05:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 08:05:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2023-11-19 08:05:54,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 3 [2023-11-19 08:05:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2023-11-19 08:05:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2023-11-19 08:05:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:05:54,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:54,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:05:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:54,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2023-11-19 08:05:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668138389] [2023-11-19 08:05:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,238 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 08:05:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668138389] [2023-11-19 08:05:54,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668138389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:54,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666676546] [2023-11-19 08:05:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:54,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:54,241 INFO L87 Difference]: Start difference. First operand 27 states and 27 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 08:05:54,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:54,272 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-11-19 08:05:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:54,273 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 08:05:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:54,274 INFO L225 Difference]: With dead ends: 23 [2023-11-19 08:05:54,274 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 08:05:54,275 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 08:05:54,276 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:54,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 08:05:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 08:05:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 22 states have internal predecessors, (23), 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 08:05:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-11-19 08:05:54,282 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 4 [2023-11-19 08:05:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:54,282 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-11-19 08:05:54,282 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 08:05:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-11-19 08:05:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:05:54,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:54,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:05:54,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:54,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:54,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2023-11-19 08:05:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099357871] [2023-11-19 08:05:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,452 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 08:05:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099357871] [2023-11-19 08:05:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099357871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050509795] [2023-11-19 08:05:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:54,457 INFO L87 Difference]: Start difference. First operand 23 states and 23 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 08:05:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:54,495 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-11-19 08:05:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:54,496 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 08:05:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:54,500 INFO L225 Difference]: With dead ends: 19 [2023-11-19 08:05:54,500 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 08:05:54,500 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 08:05:54,506 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:54,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 08:05:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-19 08:05:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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 08:05:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-11-19 08:05:54,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 4 [2023-11-19 08:05:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:54,520 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-11-19 08:05:54,520 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 08:05:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-11-19 08:05:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 08:05:54,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:54,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:54,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:54,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1350674431, now seen corresponding path program 1 times [2023-11-19 08:05:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006599979] [2023-11-19 08:05:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,904 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 08:05:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006599979] [2023-11-19 08:05:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006599979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:54,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:54,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295830207] [2023-11-19 08:05:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:54,910 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 08:05:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:54,989 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2023-11-19 08:05:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2023-11-19 08:05:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:54,992 INFO L225 Difference]: With dead ends: 25 [2023-11-19 08:05:54,992 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 08:05:54,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:54,996 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:54,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 08:05:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-11-19 08:05:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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 08:05:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-11-19 08:05:55,003 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 10 [2023-11-19 08:05:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:55,003 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-11-19 08:05:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 08:05:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-19 08:05:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 08:05:55,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:55,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:55,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:05:55,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1204918551, now seen corresponding path program 1 times [2023-11-19 08:05:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476558362] [2023-11-19 08:05:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476558362] [2023-11-19 08:05:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476558362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573324009] [2023-11-19 08:05:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:55,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:55,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:55,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:55,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:05:55,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:55,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 08:05:55,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 08:05:55,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 08:05:55,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-19 08:05:55,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 08:05:55,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:05:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:55,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:55,867 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_63 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_63) |c_ULTIMATE.start_main_~i~0#1.base|) |c_ULTIMATE.start_main_~i~0#1.offset|) 11)) is different from false [2023-11-19 08:05:59,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:05:59,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2023-11-19 08:05:59,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-19 08:05:59,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 08:05:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573324009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:59,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:05:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2023-11-19 08:05:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99478087] [2023-11-19 08:05:59,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 08:05:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 08:05:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=243, Unknown=7, NotChecked=34, Total=380 [2023-11-19 08:05:59,779 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 08:06:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:00,263 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2023-11-19 08:06:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:06:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 08:06:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:00,265 INFO L225 Difference]: With dead ends: 47 [2023-11-19 08:06:00,265 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 08:06:00,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=195, Invalid=501, Unknown=10, NotChecked=50, Total=756 [2023-11-19 08:06:00,267 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 48 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:00,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 70 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 2 Unknown, 38 Unchecked, 0.2s Time] [2023-11-19 08:06:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 08:06:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2023-11-19 08:06:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 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 08:06:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2023-11-19 08:06:00,274 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 21 [2023-11-19 08:06:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:00,274 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2023-11-19 08:06:00,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 08:06:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2023-11-19 08:06:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 08:06:00,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:00,276 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:00,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:00,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:00,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 08:06:00,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1770776553, now seen corresponding path program 2 times [2023-11-19 08:06:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448039575] [2023-11-19 08:06:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448039575] [2023-11-19 08:06:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448039575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913593108] [2023-11-19 08:06:01,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:06:01,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:01,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:01,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:01,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:06:01,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:06:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:06:01,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 08:06:03,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:03,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913593108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:03,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:03,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 20 [2023-11-19 08:06:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808219170] [2023-11-19 08:06:03,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:06:03,153 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 08:06:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:03,287 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2023-11-19 08:06:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 43 [2023-11-19 08:06:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:03,290 INFO L225 Difference]: With dead ends: 43 [2023-11-19 08:06:03,290 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:06:03,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:06:03,291 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:03,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:06:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:06:03,293 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 08:06:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:06:03,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2023-11-19 08:06:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:03,293 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:06:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 08:06:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:06:03,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:06:03,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-19 08:06:03,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-19 08:06:03,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-19 08:06:03,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-19 08:06:03,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-19 08:06:03,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-19 08:06:03,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-19 08:06:03,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-19 08:06:03,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-19 08:06:03,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-19 08:06:03,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-19 08:06:03,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-19 08:06:03,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-11-19 08:06:03,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-11-19 08:06:03,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-11-19 08:06:03,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-11-19 08:06:03,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2023-11-19 08:06:03,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:03,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:03,522 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-19 08:06:03,524 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:06:03,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:06:03 BoogieIcfgContainer [2023-11-19 08:06:03,529 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:06:03,529 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:06:03,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:06:03,530 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:06:03,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:53" (3/4) ... [2023-11-19 08:06:03,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:06:03,544 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 08:06:03,544 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:06:03,544 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 08:06:03,545 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:06:03,648 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:06:03,649 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:06:03,649 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:06:03,650 INFO L158 Benchmark]: Toolchain (without parser) took 11788.03ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 110.8MB in the beginning and 68.7MB in the end (delta: 42.1MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,651 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:06:03,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.04ms. Allocated memory is still 157.3MB. Free memory was 110.8MB in the beginning and 95.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 157.3MB. Free memory was 95.2MB in the beginning and 93.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,652 INFO L158 Benchmark]: Boogie Preprocessor took 39.85ms. Allocated memory is still 157.3MB. Free memory was 93.4MB in the beginning and 92.5MB in the end (delta: 904.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,653 INFO L158 Benchmark]: RCFGBuilder took 519.87ms. Allocated memory is still 157.3MB. Free memory was 91.9MB in the beginning and 79.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,653 INFO L158 Benchmark]: TraceAbstraction took 10496.25ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 79.3MB in the beginning and 73.5MB in the end (delta: 5.8MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,654 INFO L158 Benchmark]: Witness Printer took 120.05ms. Allocated memory is still 188.7MB. Free memory was 73.5MB in the beginning and 68.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:06:03,656 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 125.8MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.04ms. Allocated memory is still 157.3MB. Free memory was 110.8MB in the beginning and 95.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 157.3MB. Free memory was 95.2MB in the beginning and 93.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.85ms. Allocated memory is still 157.3MB. Free memory was 93.4MB in the beginning and 92.5MB in the end (delta: 904.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.87ms. Allocated memory is still 157.3MB. Free memory was 91.9MB in the beginning and 79.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10496.25ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 79.3MB in the beginning and 73.5MB in the end (delta: 5.8MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Witness Printer took 120.05ms. Allocated memory is still 188.7MB. Free memory was 73.5MB in the beginning and 68.7MB in the end (delta: 4.8MB). 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 546]: 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, 37 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 38 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 80 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, InterpolantAutomatonStates: 36, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 152 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 163 ConstructedInterpolants, 52 QuantifiedInterpolants, 3345 SizeOfPredicates, 10 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 42/93 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:06:03,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1fcd33e-abd0-4b0f-a036-b7395ac14abc/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