./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:20,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:20,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:17:20,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:20,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:20,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:20,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:20,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:20,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:20,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:20,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:20,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:20,653 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:20,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:20,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:20,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:20,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:20,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:20,657 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:17:20,657 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:17:20,658 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:17:20,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:20,660 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:17:20,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:20,661 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:20,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:20,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:20,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:20,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:20,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:20,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:20,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:20,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:20,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:20,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:20,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:20,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:20,667 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:20,667 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2023-11-06 22:17:20,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:21,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:21,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:21,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:21,021 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:21,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-11-06 22:17:24,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:24,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:24,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-11-06 22:17:24,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/d84689636/844d6a80c36f46fd9b3dc3463198ae73/FLAG9fecdef47 [2023-11-06 22:17:24,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/d84689636/844d6a80c36f46fd9b3dc3463198ae73 [2023-11-06 22:17:24,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:24,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:24,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:24,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:24,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:24,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:24" (1/1) ... [2023-11-06 22:17:24,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b0221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:24, skipping insertion in model container [2023-11-06 22:17:24,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:24" (1/1) ... [2023-11-06 22:17:24,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:25,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:25,024 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:25,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:25,120 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:25,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25 WrapperNode [2023-11-06 22:17:25,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:25,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:25,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:25,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:25,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,181 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2023-11-06 22:17:25,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:25,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:25,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:25,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:25,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:25,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:25,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:25,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:25,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (1/1) ... [2023-11-06 22:17:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:25,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:25,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:17:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:25,442 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:25,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:25,823 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:25,830 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:25,833 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:17:25,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:25 BoogieIcfgContainer [2023-11-06 22:17:25,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:25,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:25,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:25,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:25,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:24" (1/3) ... [2023-11-06 22:17:25,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56418695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:25, skipping insertion in model container [2023-11-06 22:17:25,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:25" (2/3) ... [2023-11-06 22:17:25,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56418695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:25, skipping insertion in model container [2023-11-06 22:17:25,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:25" (3/3) ... [2023-11-06 22:17:25,850 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2023-11-06 22:17:25,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:25,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:17:25,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:25,924 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a2d827d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:25,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:17:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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 22:17:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:17:25,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:25,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:17:25,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:25,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2023-11-06 22:17:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986742076] [2023-11-06 22:17:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:25,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:26,093 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 22:17:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986742076] [2023-11-06 22:17:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986742076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:26,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:26,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638937060] [2023-11-06 22:17:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:17:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:17:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:26,145 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 22:17:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:26,179 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-11-06 22:17:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:17:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 22:17:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:26,195 INFO L225 Difference]: With dead ends: 64 [2023-11-06 22:17:26,195 INFO L226 Difference]: Without dead ends: 62 [2023-11-06 22:17:26,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:26,205 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:26,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-06 22:17:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-06 22:17:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 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 22:17:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-06 22:17:26,258 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2023-11-06 22:17:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:26,258 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-06 22:17:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 22:17:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-06 22:17:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:17:26,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:26,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:17:26,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:26,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2023-11-06 22:17:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202614157] [2023-11-06 22:17:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:26,345 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 22:17:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202614157] [2023-11-06 22:17:26,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202614157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:26,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:26,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133064372] [2023-11-06 22:17:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:26,353 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:26,377 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2023-11-06 22:17:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:26,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:17:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:26,380 INFO L225 Difference]: With dead ends: 63 [2023-11-06 22:17:26,380 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 22:17:26,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:26,382 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:26,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 22:17:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-06 22:17:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 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 22:17:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2023-11-06 22:17:26,395 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2023-11-06 22:17:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:26,396 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2023-11-06 22:17:26,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2023-11-06 22:17:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:17:26,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:26,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:26,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:17:26,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:26,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2023-11-06 22:17:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268565323] [2023-11-06 22:17:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:26,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:26,523 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 22:17:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268565323] [2023-11-06 22:17:26,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268565323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:26,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:26,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325453726] [2023-11-06 22:17:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:26,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:26,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:26,531 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:26,596 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2023-11-06 22:17:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:17:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:26,602 INFO L225 Difference]: With dead ends: 111 [2023-11-06 22:17:26,604 INFO L226 Difference]: Without dead ends: 111 [2023-11-06 22:17:26,605 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 22:17:26,607 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:26,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-06 22:17:26,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2023-11-06 22:17:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 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 22:17:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2023-11-06 22:17:26,635 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2023-11-06 22:17:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:26,635 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2023-11-06 22:17:26,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2023-11-06 22:17:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:26,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:26,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:17:26,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:26,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2023-11-06 22:17:26,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531921857] [2023-11-06 22:17:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:26,776 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 22:17:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531921857] [2023-11-06 22:17:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531921857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:26,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146744467] [2023-11-06 22:17:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:26,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:26,779 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:26,850 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2023-11-06 22:17:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:17:26,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:26,852 INFO L225 Difference]: With dead ends: 122 [2023-11-06 22:17:26,852 INFO L226 Difference]: Without dead ends: 122 [2023-11-06 22:17:26,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:26,854 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 34 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 208 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-06 22:17:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2023-11-06 22:17:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.9) internal successors, (171), 109 states have internal predecessors, (171), 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 22:17:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions. [2023-11-06 22:17:26,868 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 8 [2023-11-06 22:17:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:26,869 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 171 transitions. [2023-11-06 22:17:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions. [2023-11-06 22:17:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:26,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:26,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:26,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:17:26,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:26,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2023-11-06 22:17:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516484522] [2023-11-06 22:17:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:26,967 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 22:17:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516484522] [2023-11-06 22:17:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516484522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285460323] [2023-11-06 22:17:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:26,970 INFO L87 Difference]: Start difference. First operand 110 states and 171 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:27,081 INFO L93 Difference]: Finished difference Result 207 states and 321 transitions. [2023-11-06 22:17:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:27,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:27,084 INFO L225 Difference]: With dead ends: 207 [2023-11-06 22:17:27,085 INFO L226 Difference]: Without dead ends: 204 [2023-11-06 22:17:27,085 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 22:17:27,086 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:27,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-06 22:17:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 183. [2023-11-06 22:17:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 163 states have (on average 1.8711656441717792) internal successors, (305), 182 states have internal predecessors, (305), 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 22:17:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 305 transitions. [2023-11-06 22:17:27,106 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 305 transitions. Word has length 8 [2023-11-06 22:17:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:27,106 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 305 transitions. [2023-11-06 22:17:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 305 transitions. [2023-11-06 22:17:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:27,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:27,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:17:27,108 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:27,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2023-11-06 22:17:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707974237] [2023-11-06 22:17:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:27,212 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 22:17:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707974237] [2023-11-06 22:17:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707974237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:27,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:27,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843701183] [2023-11-06 22:17:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:27,216 INFO L87 Difference]: Start difference. First operand 183 states and 305 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:27,309 INFO L93 Difference]: Finished difference Result 274 states and 434 transitions. [2023-11-06 22:17:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:27,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:27,313 INFO L225 Difference]: With dead ends: 274 [2023-11-06 22:17:27,313 INFO L226 Difference]: Without dead ends: 274 [2023-11-06 22:17:27,314 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 22:17:27,326 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:27,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-06 22:17:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 253. [2023-11-06 22:17:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 235 states have (on average 1.7872340425531914) internal successors, (420), 252 states have internal predecessors, (420), 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 22:17:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 420 transitions. [2023-11-06 22:17:27,358 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 420 transitions. Word has length 8 [2023-11-06 22:17:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:27,358 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 420 transitions. [2023-11-06 22:17:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 420 transitions. [2023-11-06 22:17:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:27,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:27,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:27,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:17:27,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:27,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2023-11-06 22:17:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953427411] [2023-11-06 22:17:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:27,533 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 22:17:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953427411] [2023-11-06 22:17:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953427411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:27,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:27,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87874558] [2023-11-06 22:17:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:27,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:27,537 INFO L87 Difference]: Start difference. First operand 253 states and 420 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:27,603 INFO L93 Difference]: Finished difference Result 269 states and 421 transitions. [2023-11-06 22:17:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:27,607 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:17:27,607 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 22:17:27,607 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 22:17:27,610 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:27,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 22:17:27,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 251. [2023-11-06 22:17:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 235 states have (on average 1.7361702127659575) internal successors, (408), 250 states have internal predecessors, (408), 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 22:17:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 408 transitions. [2023-11-06 22:17:27,651 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 408 transitions. Word has length 8 [2023-11-06 22:17:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:27,652 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 408 transitions. [2023-11-06 22:17:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 408 transitions. [2023-11-06 22:17:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:17:27,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:27,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:17:27,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:27,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2023-11-06 22:17:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737415333] [2023-11-06 22:17:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:27,718 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 22:17:27,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:27,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737415333] [2023-11-06 22:17:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737415333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159824840] [2023-11-06 22:17:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:27,721 INFO L87 Difference]: Start difference. First operand 251 states and 408 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:27,762 INFO L93 Difference]: Finished difference Result 215 states and 312 transitions. [2023-11-06 22:17:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:17:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:27,765 INFO L225 Difference]: With dead ends: 215 [2023-11-06 22:17:27,765 INFO L226 Difference]: Without dead ends: 215 [2023-11-06 22:17:27,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:27,767 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 193 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-06 22:17:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 188. [2023-11-06 22:17:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 176 states have (on average 1.6534090909090908) internal successors, (291), 187 states have internal predecessors, (291), 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 22:17:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 291 transitions. [2023-11-06 22:17:27,778 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 291 transitions. Word has length 9 [2023-11-06 22:17:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:27,778 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 291 transitions. [2023-11-06 22:17:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 291 transitions. [2023-11-06 22:17:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:17:27,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:27,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:27,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:17:27,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:27,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2023-11-06 22:17:27,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280311606] [2023-11-06 22:17:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:27,838 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 22:17:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280311606] [2023-11-06 22:17:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280311606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:27,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950472500] [2023-11-06 22:17:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:27,841 INFO L87 Difference]: Start difference. First operand 188 states and 291 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:27,897 INFO L93 Difference]: Finished difference Result 281 states and 415 transitions. [2023-11-06 22:17:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:27,904 INFO L225 Difference]: With dead ends: 281 [2023-11-06 22:17:27,904 INFO L226 Difference]: Without dead ends: 281 [2023-11-06 22:17:27,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:27,908 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:27,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 175 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-06 22:17:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 259. [2023-11-06 22:17:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 247 states have (on average 1.591093117408907) internal successors, (393), 258 states have internal predecessors, (393), 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 22:17:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 393 transitions. [2023-11-06 22:17:27,929 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 393 transitions. Word has length 10 [2023-11-06 22:17:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:27,929 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 393 transitions. [2023-11-06 22:17:27,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 393 transitions. [2023-11-06 22:17:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:17:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:27,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:17:27,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:27,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2023-11-06 22:17:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703614678] [2023-11-06 22:17:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:27,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:17:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:28,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:17:28,019 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:17:28,020 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-06 22:17:28,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-06 22:17:28,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-06 22:17:28,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-06 22:17:28,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-06 22:17:28,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-06 22:17:28,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-06 22:17:28,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-06 22:17:28,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-06 22:17:28,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-06 22:17:28,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-06 22:17:28,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-11-06 22:17:28,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-06 22:17:28,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-06 22:17:28,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-06 22:17:28,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:17:28,030 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:28,034 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:17:28,075 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:17:28,076 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:17:28,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:17:28 BoogieIcfgContainer [2023-11-06 22:17:28,092 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:17:28,092 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:17:28,092 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:17:28,093 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:17:28,093 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:25" (3/4) ... [2023-11-06 22:17:28,095 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:17:28,096 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:17:28,097 INFO L158 Benchmark]: Toolchain (without parser) took 3533.61ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 106.4MB in the beginning and 106.0MB in the end (delta: 444.2kB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,097 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 153.1MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:17:28,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.07ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 88.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.31ms. Allocated memory is still 153.1MB. Free memory was 88.7MB in the beginning and 86.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,099 INFO L158 Benchmark]: Boogie Preprocessor took 37.11ms. Allocated memory is still 153.1MB. Free memory was 86.6MB in the beginning and 84.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,099 INFO L158 Benchmark]: RCFGBuilder took 615.42ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 84.8MB in the beginning and 149.7MB in the end (delta: -64.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,099 INFO L158 Benchmark]: TraceAbstraction took 2252.99ms. Allocated memory is still 184.5MB. Free memory was 148.7MB in the beginning and 106.0MB in the end (delta: 42.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2023-11-06 22:17:28,100 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 184.5MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:17:28,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 153.1MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.07ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 88.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.31ms. Allocated memory is still 153.1MB. Free memory was 88.7MB in the beginning and 86.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.11ms. Allocated memory is still 153.1MB. Free memory was 86.6MB in the beginning and 84.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 615.42ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 84.8MB in the beginning and 149.7MB in the end (delta: -64.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2252.99ms. Allocated memory is still 184.5MB. Free memory was 148.7MB in the beginning and 106.0MB in the end (delta: 42.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 184.5MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [S || 1 != pc4 || __VERIFIER_nondet_int()=1, S={0:0}, __VERIFIER_nondet_int()=-1, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1++=1, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1++=1, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [S || 1 != pc4 || __VERIFIER_nondet_int()=0, S={0:0}, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 400 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 400 mSDsluCounter, 1418 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 657 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 761 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=9, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 139 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:17:28,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:31,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:31,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:17:31,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:31,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:31,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:31,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:31,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:31,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:31,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:31,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:31,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:31,259 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:31,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:31,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:31,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:31,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:31,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:31,263 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:17:31,263 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:17:31,264 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:17:31,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:31,265 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:17:31,266 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:17:31,266 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:17:31,267 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:31,267 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:31,268 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:31,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:31,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:31,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:31,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:31,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:31,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:31,272 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:17:31,272 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:17:31,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:31,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:31,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:31,274 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:17:31,275 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:31,275 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2023-11-06 22:17:31,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:31,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:31,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:31,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:31,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:31,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-11-06 22:17:35,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:35,485 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:35,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/sv-benchmarks/c/memsafety/lockfree-3.2.i [2023-11-06 22:17:35,510 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/4245f3a48/4ec5db505150400180e129421f766ba3/FLAGe8be7b887 [2023-11-06 22:17:35,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/data/4245f3a48/4ec5db505150400180e129421f766ba3 [2023-11-06 22:17:35,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:35,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:35,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:35,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:35,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:35,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:35" (1/1) ... [2023-11-06 22:17:35,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33776264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:35, skipping insertion in model container [2023-11-06 22:17:35,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:35" (1/1) ... [2023-11-06 22:17:35,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:36,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:36,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:36,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:36,152 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:36,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36 WrapperNode [2023-11-06 22:17:36,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:36,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:36,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:36,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:36,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,235 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2023-11-06 22:17:36,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:36,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:36,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:36,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:36,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:36,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:36,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:36,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:36,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:36,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:17:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:17:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:17:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:17:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:17:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:17:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:36,634 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:36,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:37,125 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:37,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:37,132 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:17:37,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:37 BoogieIcfgContainer [2023-11-06 22:17:37,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:37,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:37,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:37,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:37,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:35" (1/3) ... [2023-11-06 22:17:37,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:37, skipping insertion in model container [2023-11-06 22:17:37,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36" (2/3) ... [2023-11-06 22:17:37,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:37, skipping insertion in model container [2023-11-06 22:17:37,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:37" (3/3) ... [2023-11-06 22:17:37,150 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2023-11-06 22:17:37,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:37,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:17:37,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:37,249 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f1f11fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:37,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:17:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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 22:17:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:17:37,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:37,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:17:37,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:37,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2023-11-06 22:17:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767120716] [2023-11-06 22:17:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:37,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:37,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:37,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:17:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:37,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:17:37,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:37,436 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 22:17:37,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:37,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767120716] [2023-11-06 22:17:37,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767120716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:37,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:37,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485268843] [2023-11-06 22:17:37,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:37,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:17:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:17:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:37,489 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 22:17:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:37,511 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-11-06 22:17:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:17:37,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 22:17:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:37,526 INFO L225 Difference]: With dead ends: 64 [2023-11-06 22:17:37,526 INFO L226 Difference]: Without dead ends: 62 [2023-11-06 22:17:37,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:37,536 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:37,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-06 22:17:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-06 22:17:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 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 22:17:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-06 22:17:37,594 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2023-11-06 22:17:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:37,594 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-06 22:17:37,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 22:17:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-06 22:17:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:17:37,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:37,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:37,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:37,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:37,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2023-11-06 22:17:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459896597] [2023-11-06 22:17:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:37,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:37,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:17:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:37,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:17:37,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:38,089 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 22:17:38,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:38,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459896597] [2023-11-06 22:17:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459896597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:38,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059867733] [2023-11-06 22:17:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:38,102 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:38,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:38,257 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2023-11-06 22:17:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:17:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:17:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:38,260 INFO L225 Difference]: With dead ends: 101 [2023-11-06 22:17:38,260 INFO L226 Difference]: Without dead ends: 101 [2023-11-06 22:17:38,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:38,263 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:38,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 208 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-06 22:17:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2023-11-06 22:17:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.9152542372881356) internal successors, (113), 78 states have internal predecessors, (113), 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 22:17:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-11-06 22:17:38,288 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 7 [2023-11-06 22:17:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:38,289 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-11-06 22:17:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-11-06 22:17:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:17:38,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:38,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:38,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:38,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:38,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:38,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2023-11-06 22:17:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929751672] [2023-11-06 22:17:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:38,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:38,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:17:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:38,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:38,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:38,662 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 22:17:38,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:38,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929751672] [2023-11-06 22:17:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929751672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:38,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401886511] [2023-11-06 22:17:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:38,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:38,667 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:38,741 INFO L93 Difference]: Finished difference Result 126 states and 177 transitions. [2023-11-06 22:17:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:17:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:38,745 INFO L225 Difference]: With dead ends: 126 [2023-11-06 22:17:38,745 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 22:17:38,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 22:17:38,747 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:38,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 22:17:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2023-11-06 22:17:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.9204545454545454) internal successors, (169), 107 states have internal predecessors, (169), 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 22:17:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 169 transitions. [2023-11-06 22:17:38,763 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 169 transitions. Word has length 7 [2023-11-06 22:17:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 169 transitions. [2023-11-06 22:17:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 169 transitions. [2023-11-06 22:17:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:38,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:38,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:38,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:38,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:38,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:38,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2023-11-06 22:17:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934231728] [2023-11-06 22:17:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:38,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:38,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:38,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:38,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:17:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:39,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:17:39,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:39,073 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 22:17:39,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:39,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934231728] [2023-11-06 22:17:39,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934231728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489302480] [2023-11-06 22:17:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:39,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:39,078 INFO L87 Difference]: Start difference. First operand 108 states and 169 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:39,270 INFO L93 Difference]: Finished difference Result 203 states and 317 transitions. [2023-11-06 22:17:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:39,274 INFO L225 Difference]: With dead ends: 203 [2023-11-06 22:17:39,274 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 22:17:39,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:17:39,277 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:39,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:39,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 22:17:39,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2023-11-06 22:17:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 160 states have (on average 1.8875) internal successors, (302), 179 states have internal predecessors, (302), 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 22:17:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 302 transitions. [2023-11-06 22:17:39,315 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 302 transitions. Word has length 8 [2023-11-06 22:17:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:39,315 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 302 transitions. [2023-11-06 22:17:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 302 transitions. [2023-11-06 22:17:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:39,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:39,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:39,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:39,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:39,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2023-11-06 22:17:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:39,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161542727] [2023-11-06 22:17:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:39,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:39,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:39,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:17:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:39,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:39,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:39,675 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 7 [2023-11-06 22:17:39,684 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 22:17:39,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:39,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161542727] [2023-11-06 22:17:39,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161542727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:39,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:39,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008660630] [2023-11-06 22:17:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:39,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:39,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:39,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:39,696 INFO L87 Difference]: Start difference. First operand 180 states and 302 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:39,871 INFO L93 Difference]: Finished difference Result 270 states and 430 transitions. [2023-11-06 22:17:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:39,874 INFO L225 Difference]: With dead ends: 270 [2023-11-06 22:17:39,874 INFO L226 Difference]: Without dead ends: 270 [2023-11-06 22:17:39,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:17:39,876 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:39,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-06 22:17:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 249. [2023-11-06 22:17:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 231 states have (on average 1.800865800865801) internal successors, (416), 248 states have internal predecessors, (416), 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 22:17:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 416 transitions. [2023-11-06 22:17:39,919 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 416 transitions. Word has length 8 [2023-11-06 22:17:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:39,921 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 416 transitions. [2023-11-06 22:17:39,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 416 transitions. [2023-11-06 22:17:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:17:39,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:39,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:39,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:40,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:40,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:40,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2023-11-06 22:17:40,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:40,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917500156] [2023-11-06 22:17:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:40,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:40,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:40,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:17:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:40,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:40,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:40,248 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 22:17:40,260 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 22:17:40,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:40,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917500156] [2023-11-06 22:17:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917500156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:40,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:40,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124172446] [2023-11-06 22:17:40,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:40,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:40,268 INFO L87 Difference]: Start difference. First operand 249 states and 416 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:40,490 INFO L93 Difference]: Finished difference Result 265 states and 417 transitions. [2023-11-06 22:17:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:17:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:40,493 INFO L225 Difference]: With dead ends: 265 [2023-11-06 22:17:40,493 INFO L226 Difference]: Without dead ends: 265 [2023-11-06 22:17:40,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:17:40,494 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:40,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-06 22:17:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 247. [2023-11-06 22:17:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 231 states have (on average 1.748917748917749) internal successors, (404), 246 states have internal predecessors, (404), 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 22:17:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 404 transitions. [2023-11-06 22:17:40,509 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 404 transitions. Word has length 8 [2023-11-06 22:17:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:40,510 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 404 transitions. [2023-11-06 22:17:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 404 transitions. [2023-11-06 22:17:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:17:40,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:40,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:40,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:40,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:40,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:40,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2023-11-06 22:17:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820611479] [2023-11-06 22:17:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:40,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:40,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:40,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:40,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:17:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:40,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:40,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:40,820 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 22:17:40,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:40,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820611479] [2023-11-06 22:17:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820611479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:40,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143247518] [2023-11-06 22:17:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:40,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:40,824 INFO L87 Difference]: Start difference. First operand 247 states and 404 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:40,866 INFO L93 Difference]: Finished difference Result 210 states and 307 transitions. [2023-11-06 22:17:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:40,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:17:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:40,868 INFO L225 Difference]: With dead ends: 210 [2023-11-06 22:17:40,869 INFO L226 Difference]: Without dead ends: 210 [2023-11-06 22:17:40,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:40,872 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:40,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 193 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-06 22:17:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 183. [2023-11-06 22:17:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 171 states have (on average 1.672514619883041) internal successors, (286), 182 states have internal predecessors, (286), 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 22:17:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 286 transitions. [2023-11-06 22:17:40,887 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 286 transitions. Word has length 9 [2023-11-06 22:17:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:40,887 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 286 transitions. [2023-11-06 22:17:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 286 transitions. [2023-11-06 22:17:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:17:40,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:40,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:40,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:41,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:41,103 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:41,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:41,103 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2023-11-06 22:17:41,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:41,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161465588] [2023-11-06 22:17:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:41,109 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:41,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:17:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:41,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:41,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:41,179 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 22:17:41,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:41,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161465588] [2023-11-06 22:17:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161465588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:41,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:41,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908524658] [2023-11-06 22:17:41,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:41,183 INFO L87 Difference]: Start difference. First operand 183 states and 286 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:41,223 INFO L93 Difference]: Finished difference Result 271 states and 405 transitions. [2023-11-06 22:17:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:41,226 INFO L225 Difference]: With dead ends: 271 [2023-11-06 22:17:41,226 INFO L226 Difference]: Without dead ends: 271 [2023-11-06 22:17:41,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:41,227 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:41,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 175 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-06 22:17:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 249. [2023-11-06 22:17:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 237 states have (on average 1.6160337552742616) internal successors, (383), 248 states have internal predecessors, (383), 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 22:17:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 383 transitions. [2023-11-06 22:17:41,237 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 383 transitions. Word has length 10 [2023-11-06 22:17:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:41,237 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 383 transitions. [2023-11-06 22:17:41,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:17:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 383 transitions. [2023-11-06 22:17:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:17:41,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:41,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:41,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:41,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:41,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-06 22:17:41,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2023-11-06 22:17:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567011260] [2023-11-06 22:17:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:41,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:17:41,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:17:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:41,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:17:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:41,646 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 22:17:41,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:17:41,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-06 22:17:41,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-06 22:17:41,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-06 22:17:41,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-06 22:17:41,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-06 22:17:41,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-06 22:17:41,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-06 22:17:41,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-06 22:17:41,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-06 22:17:41,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-06 22:17:41,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-06 22:17:41,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-06 22:17:41,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-06 22:17:41,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-06 22:17:41,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-06 22:17:41,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-06 22:17:41,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-11-06 22:17:41,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-06 22:17:41,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-06 22:17:41,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-06 22:17:41,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:41,872 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:41,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:17:41,907 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:17:41,909 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:17:41,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:17:41 BoogieIcfgContainer [2023-11-06 22:17:41,933 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:17:41,934 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:17:41,934 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:17:41,934 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:17:41,935 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:37" (3/4) ... [2023-11-06 22:17:41,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:17:41,938 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:17:41,940 INFO L158 Benchmark]: Toolchain (without parser) took 6405.75ms. Allocated memory is still 119.5MB. Free memory was 94.7MB in the beginning and 55.4MB in the end (delta: 39.3MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,940 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:17:41,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.48ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 76.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.72ms. Allocated memory is still 119.5MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,942 INFO L158 Benchmark]: Boogie Preprocessor took 88.42ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,942 INFO L158 Benchmark]: RCFGBuilder took 808.91ms. Allocated memory is still 119.5MB. Free memory was 72.2MB in the beginning and 86.2MB in the end (delta: -14.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,943 INFO L158 Benchmark]: TraceAbstraction took 4795.03ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 55.4MB in the end (delta: 30.2MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2023-11-06 22:17:41,943 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 119.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:17:41,946 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.48ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 76.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.72ms. Allocated memory is still 119.5MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.42ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 808.91ms. Allocated memory is still 119.5MB. Free memory was 72.2MB in the beginning and 86.2MB in the end (delta: -14.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4795.03ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 55.4MB in the end (delta: 30.2MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 119.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [S || 1 != pc4 || __VERIFIER_nondet_int()=1, S={0:0}, __VERIFIER_nondet_int()=2, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1++=1, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1++=1, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [S || 1 != pc4 || __VERIFIER_nondet_int()=0, S={0:0}, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 411 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 411 mSDsluCounter, 1267 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 584 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 683 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 148 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 5 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:17:41,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a223085f-b0c7-4bac-87e0-ab582d770758/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample