./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e7bb482b 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_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:29,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:29,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-06 21:07:29,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:29,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:29,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:29,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:29,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:29,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:29,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:29,354 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:29,354 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:29,355 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:29,356 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:07:29,357 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:29,357 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:29,358 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:07:29,358 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:07:29,359 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:29,359 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:07:29,359 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:07:29,360 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:07:29,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:07:29,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:07:29,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:29,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:29,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:29,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:29,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:29,363 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:07:29,364 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:07:29,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:29,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:07:29,365 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:07:29,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:29,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:29,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:29,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:29,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:29,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:29,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:29,366 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:07:29,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:07:29,367 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:29,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:29,367 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2023-11-06 21:07:29,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:29,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:29,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:29,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:29,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:29,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-11-06 21:07:32,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:33,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:33,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2023-11-06 21:07:33,193 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/data/64ff3d9b5/1849ca00acfd45ee9dea654b52886c60/FLAGc2d26b34a [2023-11-06 21:07:33,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/data/64ff3d9b5/1849ca00acfd45ee9dea654b52886c60 [2023-11-06 21:07:33,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:33,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:33,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:33,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:33,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:33,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:33,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d31dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33, skipping insertion in model container [2023-11-06 21:07:33,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:33,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:33,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:33,842 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:33,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:33,958 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:33,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33 WrapperNode [2023-11-06 21:07:33,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:33,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:33,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:33,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:33,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,066 INFO L138 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 118 [2023-11-06 21:07:34,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:34,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:34,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:34,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:34,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:34,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:34,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:34,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:34,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (1/1) ... [2023-11-06 21:07:34,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:34,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:34,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:07:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:07:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:07:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:07:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:07:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:07:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:07:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:34,329 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:34,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:34,707 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:34,800 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:34,800 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 21:07:34,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:34 BoogieIcfgContainer [2023-11-06 21:07:34,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:34,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:34,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:34,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:34,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:33" (1/3) ... [2023-11-06 21:07:34,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9ac6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:34, skipping insertion in model container [2023-11-06 21:07:34,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:33" (2/3) ... [2023-11-06 21:07:34,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9ac6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:34, skipping insertion in model container [2023-11-06 21:07:34,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:34" (3/3) ... [2023-11-06 21:07:34,822 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2023-11-06 21:07:34,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:34,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-11-06 21:07:34,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:34,926 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=FINITE_AUTOMATA, 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;@2c5ec192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:34,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-06 21:07:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 39 states have (on average 2.230769230769231) internal successors, (87), 74 states have internal predecessors, (87), 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) [2023-11-06 21:07:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:34,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:34,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:34,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:34,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash 202735, now seen corresponding path program 1 times [2023-11-06 21:07:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527610826] [2023-11-06 21:07:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:35,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527610826] [2023-11-06 21:07:35,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527610826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:35,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:35,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:35,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903614986] [2023-11-06 21:07:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:35,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:35,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:35,314 INFO L87 Difference]: Start difference. First operand has 75 states, 39 states have (on average 2.230769230769231) internal successors, (87), 74 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:35,430 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2023-11-06 21:07:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 21:07:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:35,442 INFO L225 Difference]: With dead ends: 97 [2023-11-06 21:07:35,442 INFO L226 Difference]: Without dead ends: 94 [2023-11-06 21:07:35,444 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 [2023-11-06 21:07:35,449 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 24 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:35,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 134 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-06 21:07:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 73. [2023-11-06 21:07:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 72 states have internal predecessors, (81), 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) [2023-11-06 21:07:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2023-11-06 21:07:35,504 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 3 [2023-11-06 21:07:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:35,505 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2023-11-06 21:07:35,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2023-11-06 21:07:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 21:07:35,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:35,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 21:07:35,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:07:35,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:35,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash 6118273, now seen corresponding path program 1 times [2023-11-06 21:07:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:35,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014745504] [2023-11-06 21:07:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:35,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014745504] [2023-11-06 21:07:35,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014745504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:35,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:35,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844351666] [2023-11-06 21:07:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:35,650 INFO L87 Difference]: Start difference. First operand 73 states and 81 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) [2023-11-06 21:07:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:35,764 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2023-11-06 21:07:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:35,765 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 [2023-11-06 21:07:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:35,766 INFO L225 Difference]: With dead ends: 68 [2023-11-06 21:07:35,767 INFO L226 Difference]: Without dead ends: 68 [2023-11-06 21:07:35,767 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 [2023-11-06 21:07:35,769 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 83 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-06 21:07:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-06 21:07:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 67 states have internal predecessors, (76), 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) [2023-11-06 21:07:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-11-06 21:07:35,782 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 4 [2023-11-06 21:07:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:35,783 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-11-06 21:07:35,783 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) [2023-11-06 21:07:35,783 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-11-06 21:07:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 21:07:35,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:35,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 21:07:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:07:35,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:35,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 6118274, now seen corresponding path program 1 times [2023-11-06 21:07:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646625571] [2023-11-06 21:07:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:35,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646625571] [2023-11-06 21:07:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646625571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420278983] [2023-11-06 21:07:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:35,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:35,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:35,936 INFO L87 Difference]: Start difference. First operand 68 states and 76 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) [2023-11-06 21:07:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:36,042 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-11-06 21:07:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:36,043 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 [2023-11-06 21:07:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:36,049 INFO L225 Difference]: With dead ends: 63 [2023-11-06 21:07:36,050 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 21:07:36,051 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 [2023-11-06 21:07:36,052 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 10 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 86 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 21:07:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-06 21:07:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.868421052631579) internal successors, (71), 62 states have internal predecessors, (71), 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) [2023-11-06 21:07:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2023-11-06 21:07:36,073 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 4 [2023-11-06 21:07:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:36,074 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2023-11-06 21:07:36,074 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) [2023-11-06 21:07:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2023-11-06 21:07:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 21:07:36,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:36,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:36,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:07:36,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:36,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 226955582, now seen corresponding path program 1 times [2023-11-06 21:07:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979110090] [2023-11-06 21:07:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:36,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979110090] [2023-11-06 21:07:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979110090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052688855] [2023-11-06 21:07:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:36,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:36,212 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2023-11-06 21:07:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:36,260 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-11-06 21:07:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:36,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2023-11-06 21:07:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:36,262 INFO L225 Difference]: With dead ends: 71 [2023-11-06 21:07:36,262 INFO L226 Difference]: Without dead ends: 71 [2023-11-06 21:07:36,262 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 [2023-11-06 21:07:36,264 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:36,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-06 21:07:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-11-06 21:07:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 69 states have internal predecessors, (78), 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) [2023-11-06 21:07:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2023-11-06 21:07:36,272 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 10 [2023-11-06 21:07:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:36,273 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2023-11-06 21:07:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2023-11-06 21:07:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2023-11-06 21:07:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:36,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:07:36,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:36,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -938858304, now seen corresponding path program 1 times [2023-11-06 21:07:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268088185] [2023-11-06 21:07:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:36,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268088185] [2023-11-06 21:07:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268088185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:36,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:36,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850860902] [2023-11-06 21:07:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:36,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:36,457 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 21:07:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:36,648 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2023-11-06 21:07:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-11-06 21:07:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:36,650 INFO L225 Difference]: With dead ends: 69 [2023-11-06 21:07:36,650 INFO L226 Difference]: Without dead ends: 69 [2023-11-06 21:07:36,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:36,652 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:36,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 68 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:07:36,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-06 21:07:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2023-11-06 21:07:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.5625) internal successors, (75), 63 states have internal predecessors, (75), 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) [2023-11-06 21:07:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-11-06 21:07:36,660 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 12 [2023-11-06 21:07:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:36,660 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-11-06 21:07:36,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 21:07:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-11-06 21:07:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:36,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:36,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:36,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:07:36,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:36,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -938858303, now seen corresponding path program 1 times [2023-11-06 21:07:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764055725] [2023-11-06 21:07:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:36,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:36,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764055725] [2023-11-06 21:07:36,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764055725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:07:36,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800888670] [2023-11-06 21:07:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:36,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:07:36,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:36,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:07:36,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:07:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:36,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:07:36,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:36,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:07:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:37,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800888670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:07:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878330227] [2023-11-06 21:07:37,045 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-06 21:07:37,045 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:07:37,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:07:37,076 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:07:37,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:07:39,650 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:07:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [878330227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:41,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:07:41,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 13 [2023-11-06 21:07:41,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145063133] [2023-11-06 21:07:41,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:41,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:07:41,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:07:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=102, Unknown=8, NotChecked=0, Total=182 [2023-11-06 21:07:41,302 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-11-06 21:07:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:43,057 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-11-06 21:07:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:07:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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 12 [2023-11-06 21:07:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:43,058 INFO L225 Difference]: With dead ends: 21 [2023-11-06 21:07:43,058 INFO L226 Difference]: Without dead ends: 21 [2023-11-06 21:07:43,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=72, Invalid=102, Unknown=8, NotChecked=0, Total=182 [2023-11-06 21:07:43,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:43,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 21:07:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-06 21:07:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-06 21:07:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-06 21:07:43,063 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2023-11-06 21:07:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:43,063 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-06 21:07:43,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-11-06 21:07:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-06 21:07:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:07:43,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:43,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:07:43,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:07:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:07:43,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-06 21:07:43,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1631822670, now seen corresponding path program 1 times [2023-11-06 21:07:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822380243] [2023-11-06 21:07:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:43,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822380243] [2023-11-06 21:07:43,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822380243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:07:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660802155] [2023-11-06 21:07:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:07:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:43,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:07:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:07:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:43,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:07:43,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:43,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:07:43,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:07:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:07:43,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:07:43,888 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:07:43,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:07:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:43,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:07:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660802155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:07:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853483785] [2023-11-06 21:07:44,286 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-06 21:07:44,286 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:07:44,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:07:44,287 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:07:44,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:07:46,002 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:07:49,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1043#(and (= |ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_dll_create_#in~len#1| 5) (exists ((|v_#memory_int_85| (Array Int (Array Int Int))) (|v_#memory_int_86| (Array Int (Array Int Int))) (|v_ULTIMATE.start_dll_create_#t~nondet4#1_27| Int) (|v_#memory_int_83| (Array Int (Array Int Int)))) (and (= |#memory_int| (store |v_#memory_int_86| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_int_86| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 12 (select (select |#memory_int| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 12)))) (<= 0 (+ |v_ULTIMATE.start_dll_create_#t~nondet4#1_27| 2147483648)) (= (store |v_#memory_int_85| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_int_85| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 4 (select (select |v_#memory_int_86| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) |v_#memory_int_86|) (or (and (= |v_ULTIMATE.start_dll_create_#t~nondet4#1_27| 4) (= (store |v_#memory_int_83| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |v_#memory_int_83| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8 0) 16 1)) |v_#memory_int_85|)) (and (= |v_#memory_int_85| (store |v_#memory_int_83| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |v_#memory_int_83| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8 0) 16 0))) (not (= |v_ULTIMATE.start_dll_create_#t~nondet4#1_27| 4)))) (<= |v_ULTIMATE.start_dll_create_#t~nondet4#1_27| 2147483647))) (<= 1 |#StackHeapBarrier|) (not (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select |#valid| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= |ULTIMATE.start_dll_create_~len#1| 4) (<= 20 (select |#length| |ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= |ULTIMATE.start_main_~len~0#1| 5) (= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.offset_69| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_71| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_70| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_69| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_$Pointer$.offset_69| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8 (select (select |v_#memory_$Pointer$.offset_70| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8))) |v_#memory_$Pointer$.offset_70|) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_71| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |v_#memory_$Pointer$.offset_71| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 4 0) 12 0))) (= (store |v_#memory_$Pointer$.offset_70| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_$Pointer$.offset_70| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 16 (select (select |v_#memory_$Pointer$.offset_71| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 16))) |v_#memory_$Pointer$.offset_71|))) (<= (select |#length| |ULTIMATE.start_dll_create_~head~0#1.base|) 15) (exists ((|v_#memory_$Pointer$.base_71| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_70| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_69| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.base_70| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_$Pointer$.base_70| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 16 (select (select |v_#memory_$Pointer$.base_71| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 16))) |v_#memory_$Pointer$.base_71|) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_71| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |v_#memory_$Pointer$.base_71| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 4 |ULTIMATE.start_dll_create_~head~0#1.base|) 12 0))) (= (store |v_#memory_$Pointer$.base_69| |ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |v_#memory_$Pointer$.base_69| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8 (select (select |v_#memory_$Pointer$.base_70| |ULTIMATE.start_dll_create_~new_head~0#1.base|) 8))) |v_#memory_$Pointer$.base_70|))))' at error location [2023-11-06 21:07:49,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 21:07:49,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:07:49,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-11-06 21:07:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895936449] [2023-11-06 21:07:49,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:07:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:07:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:07:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=285, Unknown=13, NotChecked=0, Total=380 [2023-11-06 21:07:49,289 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 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) [2023-11-06 21:07:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:49,420 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-11-06 21:07:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:49,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 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 19 [2023-11-06 21:07:49,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:49,421 INFO L225 Difference]: With dead ends: 20 [2023-11-06 21:07:49,421 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:07:49,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=106, Invalid=387, Unknown=13, NotChecked=0, Total=506 [2023-11-06 21:07:49,423 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:49,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:07:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:07:49,425 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) [2023-11-06 21:07:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:07:49,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-11-06 21:07:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:49,425 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:07:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 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) [2023-11-06 21:07:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:07:49,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:07:49,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 35 remaining) [2023-11-06 21:07:49,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 35 remaining) [2023-11-06 21:07:49,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 35 remaining) [2023-11-06 21:07:49,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 35 remaining) [2023-11-06 21:07:49,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 35 remaining) [2023-11-06 21:07:49,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 35 remaining) [2023-11-06 21:07:49,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 35 remaining) [2023-11-06 21:07:49,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 35 remaining) [2023-11-06 21:07:49,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 35 remaining) [2023-11-06 21:07:49,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 35 remaining) [2023-11-06 21:07:49,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 35 remaining) [2023-11-06 21:07:49,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 35 remaining) [2023-11-06 21:07:49,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 35 remaining) [2023-11-06 21:07:49,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 35 remaining) [2023-11-06 21:07:49,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 35 remaining) [2023-11-06 21:07:49,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 35 remaining) [2023-11-06 21:07:49,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 35 remaining) [2023-11-06 21:07:49,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 35 remaining) [2023-11-06 21:07:49,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 35 remaining) [2023-11-06 21:07:49,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 35 remaining) [2023-11-06 21:07:49,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (4 of 35 remaining) [2023-11-06 21:07:49,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (3 of 35 remaining) [2023-11-06 21:07:49,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (2 of 35 remaining) [2023-11-06 21:07:49,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK (1 of 35 remaining) [2023-11-06 21:07:49,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2023-11-06 21:07:49,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:07:49,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:07:49,645 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:49,647 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:07:49,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:49 BoogieIcfgContainer [2023-11-06 21:07:49,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:07:49,660 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:07:49,660 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:07:49,660 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:07:49,661 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:34" (3/4) ... [2023-11-06 21:07:49,663 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:07:49,676 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 21:07:49,677 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-06 21:07:49,677 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:07:49,678 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:07:49,758 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 21:07:49,758 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 21:07:49,758 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:07:49,759 INFO L158 Benchmark]: Toolchain (without parser) took 16386.65ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 132.3MB in the beginning and 147.4MB in the end (delta: -15.1MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,760 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:49,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.30ms. Allocated memory is still 165.7MB. Free memory was 132.3MB in the beginning and 128.6MB in the end (delta: 3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.44ms. Allocated memory is still 165.7MB. Free memory was 128.6MB in the beginning and 126.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,761 INFO L158 Benchmark]: Boogie Preprocessor took 38.99ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 125.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:49,761 INFO L158 Benchmark]: RCFGBuilder took 696.64ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 102.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,762 INFO L158 Benchmark]: TraceAbstraction took 14849.37ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 101.4MB in the beginning and 152.2MB in the end (delta: -50.8MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,762 INFO L158 Benchmark]: Witness Printer took 98.77ms. Allocated memory is still 287.3MB. Free memory was 152.2MB in the beginning and 147.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:07:49,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.30ms. Allocated memory is still 165.7MB. Free memory was 132.3MB in the beginning and 128.6MB in the end (delta: 3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.44ms. Allocated memory is still 165.7MB. Free memory was 128.6MB in the beginning and 126.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.99ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 125.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 696.64ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 102.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 14849.37ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 101.4MB in the beginning and 152.2MB in the end (delta: -50.8MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Witness Printer took 98.77ms. Allocated memory is still 287.3MB. Free memory was 152.2MB in the beginning and 147.4MB 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: -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: 612]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 612]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 612]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 598]: 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, 75 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 229 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 249 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=0, InterpolantAutomatonStates: 33, 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, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 115 ConstructedInterpolants, 9 QuantifiedInterpolants, 982 SizeOfPredicates, 5 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 4/28 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: OVERALL_TIME: 2.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 13, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 31, TOOLS_POST_TIME: 2.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 31, TOOLS_QUANTIFIERELIM_TIME: 1.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 47, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.3s, DOMAIN_ISBOTTOM_APPLICATIONS: 13, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 149, DAG_COMPRESSION_RETAINED_NODES: 41, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 35 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:07:49,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524b1223-0421-4033-9054-cd3f7975cef3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE