./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/LogRecursive.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/LogRecursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:20:58,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:20:58,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-28 20:20:58,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:20:58,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:20:58,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:20:58,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:20:58,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:20:58,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:20:58,752 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:20:58,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:20:58,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:20:58,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:20:58,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:20:58,755 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:20:58,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:20:58,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:20:58,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:20:58,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:20:58,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:20:58,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:20:58,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:20:58,759 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:20:58,760 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:20:58,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:20:58,761 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:20:58,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:20:58,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:20:58,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:20:58,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:20:58,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:20:58,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:20:58,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:20:58,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:20:58,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:20:58,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:20:58,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:20:58,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:20:58,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:20:58,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:20:58,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:20:58,766 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_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 [2023-11-28 20:20:58,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:20:59,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:20:59,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:20:59,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:20:59,026 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:20:59,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/LogRecursive.c [2023-11-28 20:21:01,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:21:02,022 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:21:02,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/sv-benchmarks/c/termination-numeric/LogRecursive.c [2023-11-28 20:21:02,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/c768709be/37a160094e6543a18ba8ed0d050117b1/FLAG5ab742881 [2023-11-28 20:21:02,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/c768709be/37a160094e6543a18ba8ed0d050117b1 [2023-11-28 20:21:02,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:21:02,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:21:02,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:02,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:21:02,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:21:02,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2fd8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02, skipping insertion in model container [2023-11-28 20:21:02,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:21:02,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:02,231 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:21:02,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:02,259 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:21:02,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02 WrapperNode [2023-11-28 20:21:02,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:02,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:02,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:21:02,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:21:02,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,285 INFO L138 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-11-28 20:21:02,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:02,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:21:02,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:21:02,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:21:02,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,302 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-28 20:21:02,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:21:02,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:21:02,309 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:21:02,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:21:02,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (1/1) ... [2023-11-28 20:21:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:21:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:02,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:21:02,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:21:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure _log [2023-11-28 20:21:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure _log [2023-11-28 20:21:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:21:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:21:02,431 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:21:02,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:21:02,556 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:21:02,573 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:21:02,573 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:21:02,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:02 BoogieIcfgContainer [2023-11-28 20:21:02,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:21:02,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:21:02,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:21:02,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:21:02,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:21:02" (1/3) ... [2023-11-28 20:21:02,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc0b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:02, skipping insertion in model container [2023-11-28 20:21:02,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:02" (2/3) ... [2023-11-28 20:21:02,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc0b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:02, skipping insertion in model container [2023-11-28 20:21:02,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:02" (3/3) ... [2023-11-28 20:21:02,582 INFO L112 eAbstractionObserver]: Analyzing ICFG LogRecursive.c [2023-11-28 20:21:02,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:21:02,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 20:21:02,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:21:02,644 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7f45ab75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:21:02,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-28 20:21:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:21:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-28 20:21:02,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:02,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:02,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:02,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1793613479, now seen corresponding path program 1 times [2023-11-28 20:21:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548476309] [2023-11-28 20:21:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:02,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713769663] [2023-11-28 20:21:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:02,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:02,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:02,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:02,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:21:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:02,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:21:02,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:02,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:02,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:02,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548476309] [2023-11-28 20:21:02,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713769663] [2023-11-28 20:21:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713769663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:02,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:02,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301079173] [2023-11-28 20:21:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:02,885 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:02,918 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-28 20:21:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:02,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-28 20:21:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:02,928 INFO L225 Difference]: With dead ends: 23 [2023-11-28 20:21:02,929 INFO L226 Difference]: Without dead ends: 19 [2023-11-28 20:21:02,931 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 [2023-11-28 20:21:02,934 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:02,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-28 20:21:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-11-28 20:21:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-28 20:21:02,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2023-11-28 20:21:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:02,964 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-28 20:21:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-28 20:21:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-28 20:21:02,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:02,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:02,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:21:03,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:03,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -232556962, now seen corresponding path program 1 times [2023-11-28 20:21:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595261367] [2023-11-28 20:21:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:03,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701501737] [2023-11-28 20:21:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:03,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:03,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:21:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:03,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:21:03,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:03,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:03,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595261367] [2023-11-28 20:21:03,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701501737] [2023-11-28 20:21:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701501737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:03,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:03,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062305778] [2023-11-28 20:21:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:03,302 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:03,361 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-28 20:21:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:03,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-28 20:21:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:03,363 INFO L225 Difference]: With dead ends: 19 [2023-11-28 20:21:03,363 INFO L226 Difference]: Without dead ends: 18 [2023-11-28 20:21:03,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:21:03,365 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:03,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-28 20:21:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-11-28 20:21:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-11-28 20:21:03,370 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2023-11-28 20:21:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:03,370 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-28 20:21:03,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-11-28 20:21:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-28 20:21:03,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:03,371 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:03,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 20:21:03,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:03,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1327230598, now seen corresponding path program 1 times [2023-11-28 20:21:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:03,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146550490] [2023-11-28 20:21:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:03,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84919703] [2023-11-28 20:21:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:03,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:03,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:03,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:21:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:03,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:21:03,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:21:03,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146550490] [2023-11-28 20:21:03,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84919703] [2023-11-28 20:21:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84919703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:03,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:03,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120464490] [2023-11-28 20:21:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:03,641 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:03,650 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-11-28 20:21:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:03,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-28 20:21:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:03,651 INFO L225 Difference]: With dead ends: 16 [2023-11-28 20:21:03,651 INFO L226 Difference]: Without dead ends: 15 [2023-11-28 20:21:03,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:03,653 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 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 [2023-11-28 20:21:03,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-28 20:21:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-28 20:21:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-28 20:21:03,658 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 15 [2023-11-28 20:21:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-28 20:21:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-28 20:21:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-28 20:21:03,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:03,659 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:03,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:21:03,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:03,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:03,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1805524379, now seen corresponding path program 1 times [2023-11-28 20:21:03,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847610494] [2023-11-28 20:21:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:03,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564247878] [2023-11-28 20:21:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:03,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:03,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:03,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:03,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:21:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:03,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:21:03,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:21:03,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:03,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847610494] [2023-11-28 20:21:03,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:03,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564247878] [2023-11-28 20:21:03,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564247878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:03,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098503355] [2023-11-28 20:21:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:21:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:03,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:21:03,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:21:03,935 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:03,950 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-11-28 20:21:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:21:03,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-28 20:21:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:03,951 INFO L225 Difference]: With dead ends: 21 [2023-11-28 20:21:03,951 INFO L226 Difference]: Without dead ends: 20 [2023-11-28 20:21:03,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:21:03,952 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:03,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-28 20:21:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-28 20:21:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:21:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-28 20:21:03,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2023-11-28 20:21:03,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:03,958 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-28 20:21:03,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:21:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-28 20:21:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-28 20:21:03,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:03,959 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:03,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:21:04,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:04,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:04,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash -997297401, now seen corresponding path program 1 times [2023-11-28 20:21:04,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:04,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966329618] [2023-11-28 20:21:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:04,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:04,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305108365] [2023-11-28 20:21:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:04,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:04,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:04,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:21:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:04,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:21:04,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 20:21:04,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 20:21:04,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:04,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966329618] [2023-11-28 20:21:04,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:04,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305108365] [2023-11-28 20:21:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305108365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:04,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:04,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 20:21:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326132345] [2023-11-28 20:21:04,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:21:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:21:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:21:04,377 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:21:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:04,416 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-11-28 20:21:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:21:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2023-11-28 20:21:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:04,418 INFO L225 Difference]: With dead ends: 36 [2023-11-28 20:21:04,418 INFO L226 Difference]: Without dead ends: 35 [2023-11-28 20:21:04,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:21:04,419 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:04,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-28 20:21:04,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-28 20:21:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-11-28 20:21:04,426 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 26 [2023-11-28 20:21:04,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:04,426 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-11-28 20:21:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:21:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-11-28 20:21:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-28 20:21:04,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:04,428 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:04,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:21:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:04,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:04,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1496754418, now seen corresponding path program 2 times [2023-11-28 20:21:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706271052] [2023-11-28 20:21:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:04,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206476423] [2023-11-28 20:21:04,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:21:04,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:04,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:04,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:21:04,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:21:04,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:04,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:21:04,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-28 20:21:04,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-28 20:21:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706271052] [2023-11-28 20:21:05,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206476423] [2023-11-28 20:21:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206476423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:05,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-28 20:21:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546912437] [2023-11-28 20:21:05,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:05,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 20:21:05,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 20:21:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:21:05,596 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:21:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:05,687 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2023-11-28 20:21:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 20:21:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 61 [2023-11-28 20:21:05,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:05,689 INFO L225 Difference]: With dead ends: 66 [2023-11-28 20:21:05,690 INFO L226 Difference]: Without dead ends: 65 [2023-11-28 20:21:05,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:21:05,691 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:05,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:21:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-28 20:21:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-28 20:21:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:21:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2023-11-28 20:21:05,702 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2023-11-28 20:21:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:05,702 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2023-11-28 20:21:05,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:21:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2023-11-28 20:21:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:21:05,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:05,706 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:05,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:21:05,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:05,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:05,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:05,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1557545230, now seen corresponding path program 3 times [2023-11-28 20:21:05,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:05,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625822444] [2023-11-28 20:21:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:05,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134512040] [2023-11-28 20:21:05,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:21:05,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:05,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:05,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:21:06,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-28 20:21:06,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:06,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:21:06,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-28 20:21:06,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-28 20:21:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625822444] [2023-11-28 20:21:11,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134512040] [2023-11-28 20:21:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134512040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:11,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-11-28 20:21:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675862647] [2023-11-28 20:21:11,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:11,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 20:21:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 20:21:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:21:11,667 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-28 20:21:11,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:11,841 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2023-11-28 20:21:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-28 20:21:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 121 [2023-11-28 20:21:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:11,844 INFO L225 Difference]: With dead ends: 126 [2023-11-28 20:21:11,844 INFO L226 Difference]: Without dead ends: 125 [2023-11-28 20:21:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:21:11,847 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:21:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-28 20:21:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-28 20:21:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:21:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2023-11-28 20:21:11,862 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 121 [2023-11-28 20:21:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2023-11-28 20:21:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-28 20:21:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2023-11-28 20:21:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-28 20:21:11,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:11,869 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:11,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:12,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:21:12,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1774041842, now seen corresponding path program 4 times [2023-11-28 20:21:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873507448] [2023-11-28 20:21:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:12,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:12,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163475350] [2023-11-28 20:21:12,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:21:12,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:12,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:12,097 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:12,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:21:12,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:21:12,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:12,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-28 20:21:12,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2023-11-28 20:21:13,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:22:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2023-11-28 20:22:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873507448] [2023-11-28 20:22:07,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:22:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163475350] [2023-11-28 20:22:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163475350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:22:07,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:22:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2023-11-28 20:22:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117866895] [2023-11-28 20:22:07,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:22:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-11-28 20:22:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-11-28 20:22:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2023-11-28 20:22:07,395 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 94 states, 93 states have (on average 2.075268817204301) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2023-11-28 20:22:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:22:07,720 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2023-11-28 20:22:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-28 20:22:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.075268817204301) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) Word has length 241 [2023-11-28 20:22:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:22:07,725 INFO L225 Difference]: With dead ends: 246 [2023-11-28 20:22:07,725 INFO L226 Difference]: Without dead ends: 245 [2023-11-28 20:22:07,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2023-11-28 20:22:07,731 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:22:07,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:22:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-28 20:22:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-28 20:22:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2023-11-28 20:22:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2023-11-28 20:22:07,753 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 241 [2023-11-28 20:22:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:22:07,754 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2023-11-28 20:22:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.075268817204301) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2023-11-28 20:22:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2023-11-28 20:22:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-28 20:22:07,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:22:07,769 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:07,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:22:07,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:22:07,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:22:07,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash 201691621, now seen corresponding path program 5 times [2023-11-28 20:22:07,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:07,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773705193] [2023-11-28 20:22:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:08,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:22:08,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459065834] [2023-11-28 20:22:08,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:22:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:22:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:22:08,022 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:22:08,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:24:26,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-11-28 20:24:26,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:24:26,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 229 conjunts are in the unsatisfiable core [2023-11-28 20:24:26,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:52,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-28 20:26:52,239 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-28 20:26:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773705193] [2023-11-28 20:26:52,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459065834] [2023-11-28 20:26:52,240 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-28 20:26:52,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 20:26:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 20:26:52,441 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2023-11-28 20:26:52,444 INFO L158 Benchmark]: Toolchain (without parser) took 350397.01ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 134.6MB in the beginning and 162.4MB in the end (delta: -27.9MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2023-11-28 20:26:52,444 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:26:52,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.79ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 124.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 20:26:52,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.42ms. Allocated memory is still 172.0MB. Free memory was 124.7MB in the beginning and 123.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:26:52,445 INFO L158 Benchmark]: Boogie Preprocessor took 22.44ms. Allocated memory is still 172.0MB. Free memory was 123.1MB in the beginning and 122.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:26:52,445 INFO L158 Benchmark]: RCFGBuilder took 264.71ms. Allocated memory is still 172.0MB. Free memory was 122.0MB in the beginning and 111.2MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-28 20:26:52,445 INFO L158 Benchmark]: TraceAbstraction took 349866.97ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 110.5MB in the beginning and 162.4MB in the end (delta: -51.9MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2023-11-28 20:26:52,447 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.79ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 124.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.42ms. Allocated memory is still 172.0MB. Free memory was 124.7MB in the beginning and 123.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.44ms. Allocated memory is still 172.0MB. Free memory was 123.1MB in the beginning and 122.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 264.71ms. Allocated memory is still 172.0MB. Free memory was 122.0MB in the beginning and 111.2MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 349866.97ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 110.5MB in the beginning and 162.4MB in the end (delta: -51.9MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/LogRecursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:26:54,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:26:54,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-28 20:26:54,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:26:54,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:26:54,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-28 20:26:54,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:26:54,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:26:54,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:26:54,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:26:54,236 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:26:54,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:26:54,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:26:54,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:26:54,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:26:54,239 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:26:54,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:26:54,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:26:54,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:26:54,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:26:54,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:26:54,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:26:54,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 20:26:54,244 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-28 20:26:54,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:26:54,244 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-28 20:26:54,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:26:54,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:26:54,246 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:26:54,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:26:54,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:26:54,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:26:54,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:26:54,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:26:54,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:26:54,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:26:54,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:26:54,249 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-28 20:26:54,249 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-28 20:26:54,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:26:54,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:26:54,250 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:26:54,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:26:54,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:26:54,250 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-28 20:26:54,250 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_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 [2023-11-28 20:26:54,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:26:54,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:26:54,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:26:54,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:26:54,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:26:54,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/LogRecursive.c [2023-11-28 20:26:57,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:26:57,529 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:26:57,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/sv-benchmarks/c/termination-numeric/LogRecursive.c [2023-11-28 20:26:57,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/40484700d/1eb19d333ed9442782c5c051318eb77b/FLAG7ecb870db [2023-11-28 20:26:57,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/data/40484700d/1eb19d333ed9442782c5c051318eb77b [2023-11-28 20:26:57,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:26:57,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:26:57,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:26:57,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:26:57,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:26:57,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2885c1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57, skipping insertion in model container [2023-11-28 20:26:57,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:26:57,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:26:57,765 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:26:57,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:26:57,795 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:26:57,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57 WrapperNode [2023-11-28 20:26:57,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:26:57,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:26:57,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:26:57,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:26:57,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,827 INFO L138 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-11-28 20:26:57,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:26:57,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:26:57,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:26:57,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:26:57,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,848 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-28 20:26:57,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:26:57,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:26:57,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:26:57,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:26:57,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (1/1) ... [2023-11-28 20:26:57,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:26:57,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:57,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:26:57,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:26:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure _log [2023-11-28 20:26:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure _log [2023-11-28 20:26:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:26:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:26:58,000 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:26:58,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:26:58,231 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:26:58,248 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:26:58,248 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:26:58,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:58 BoogieIcfgContainer [2023-11-28 20:26:58,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:26:58,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:26:58,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:26:58,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:26:58,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:26:57" (1/3) ... [2023-11-28 20:26:58,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0eb71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:58, skipping insertion in model container [2023-11-28 20:26:58,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:57" (2/3) ... [2023-11-28 20:26:58,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0eb71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:58, skipping insertion in model container [2023-11-28 20:26:58,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:58" (3/3) ... [2023-11-28 20:26:58,267 INFO L112 eAbstractionObserver]: Analyzing ICFG LogRecursive.c [2023-11-28 20:26:58,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:26:58,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 20:26:58,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:26:58,341 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@30ff6e63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:26:58,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-28 20:26:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:26:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-28 20:26:58,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:58,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:58,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:26:58,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash 876527335, now seen corresponding path program 1 times [2023-11-28 20:26:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:58,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054340323] [2023-11-28 20:26:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:58,373 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 [2023-11-28 20:26:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:58,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:26:58,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:58,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:26:58,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:58,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:58,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054340323] [2023-11-28 20:26:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054340323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:26:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878678803] [2023-11-28 20:26:58,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:26:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:26:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:26:58,491 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:58,527 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-11-28 20:26:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:26:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-28 20:26:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:58,539 INFO L225 Difference]: With dead ends: 20 [2023-11-28 20:26:58,539 INFO L226 Difference]: Without dead ends: 15 [2023-11-28 20:26:58,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:26:58,546 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:26:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-28 20:26:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-28 20:26:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:26:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-28 20:26:58,582 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2023-11-28 20:26:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:58,583 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-28 20:26:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-28 20:26:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-28 20:26:58,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:58,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:58,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:58,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:26:58,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1402543646, now seen corresponding path program 1 times [2023-11-28 20:26:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:58,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676346020] [2023-11-28 20:26:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:58,787 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 [2023-11-28 20:26:58,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:58,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:26:58,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:58,872 WARN L260 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:26:58,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:59,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:59,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676346020] [2023-11-28 20:26:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676346020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:26:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103585019] [2023-11-28 20:26:59,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:26:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:26:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:26:59,018 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:59,243 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-28 20:26:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:26:59,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-28 20:26:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:59,250 INFO L225 Difference]: With dead ends: 17 [2023-11-28 20:26:59,250 INFO L226 Difference]: Without dead ends: 16 [2023-11-28 20:26:59,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:26:59,252 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:59,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:26:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-28 20:26:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-11-28 20:26:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:26:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-28 20:26:59,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2023-11-28 20:26:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:59,259 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-28 20:26:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-28 20:26:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-28 20:26:59,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:59,261 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:59,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-28 20:26:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:59,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:26:59,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -398900220, now seen corresponding path program 1 times [2023-11-28 20:26:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:59,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437066937] [2023-11-28 20:26:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:59,467 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 [2023-11-28 20:26:59,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:59,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:26:59,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:59,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:26:59,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:26:59,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:59,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:59,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437066937] [2023-11-28 20:26:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437066937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:59,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:59,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:26:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180399850] [2023-11-28 20:26:59,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:59,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:26:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:26:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:26:59,629 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:26:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:59,649 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-28 20:26:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:26:59,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-28 20:26:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:59,651 INFO L225 Difference]: With dead ends: 19 [2023-11-28 20:26:59,651 INFO L226 Difference]: Without dead ends: 18 [2023-11-28 20:26:59,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:26:59,653 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:59,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:26:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-28 20:26:59,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-28 20:26:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:26:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-28 20:26:59,660 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2023-11-28 20:26:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-28 20:26:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:26:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-28 20:26:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-28 20:26:59,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:59,662 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:59,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:26:59,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:26:59,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash 934776474, now seen corresponding path program 1 times [2023-11-28 20:26:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757417514] [2023-11-28 20:26:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:59,865 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 [2023-11-28 20:26:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:59,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:26:59,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:00,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:27:00,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 20:27:00,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 20:27:00,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:00,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757417514] [2023-11-28 20:27:00,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757417514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:00,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:27:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 20:27:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113358317] [2023-11-28 20:27:00,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:27:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:27:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:27:00,354 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:27:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:00,524 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-11-28 20:27:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:27:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-28 20:27:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:27:00,526 INFO L225 Difference]: With dead ends: 31 [2023-11-28 20:27:00,526 INFO L226 Difference]: Without dead ends: 30 [2023-11-28 20:27:00,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:27:00,528 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:27:00,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:27:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-28 20:27:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-28 20:27:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:27:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-28 20:27:00,536 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 29 [2023-11-28 20:27:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:27:00,537 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-28 20:27:00,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:27:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-28 20:27:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-28 20:27:00,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:27:00,540 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:00,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-28 20:27:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:00,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:27:00,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1715052964, now seen corresponding path program 2 times [2023-11-28 20:27:00,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:00,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466425486] [2023-11-28 20:27:00,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:27:00,746 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 [2023-11-28 20:27:00,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:00,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:27:00,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:01,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:27:01,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:01,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:27:01,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:27:01,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:27:01,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466425486] [2023-11-28 20:27:01,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466425486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:01,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:27:01,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-28 20:27:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873669010] [2023-11-28 20:27:01,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 20:27:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 20:27:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:27:01,991 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:27:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:02,959 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-11-28 20:27:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:27:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 51 [2023-11-28 20:27:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:27:02,961 INFO L225 Difference]: With dead ends: 55 [2023-11-28 20:27:02,961 INFO L226 Difference]: Without dead ends: 54 [2023-11-28 20:27:02,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2023-11-28 20:27:02,963 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:27:02,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:27:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-28 20:27:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-28 20:27:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:27:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2023-11-28 20:27:02,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 51 [2023-11-28 20:27:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:27:02,974 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2023-11-28 20:27:02,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:27:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2023-11-28 20:27:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-28 20:27:02,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:27:02,979 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:02,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-28 20:27:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:03,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:27:03,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash 75791328, now seen corresponding path program 3 times [2023-11-28 20:27:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:03,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761645509] [2023-11-28 20:27:03,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:27:03,181 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 [2023-11-28 20:27:03,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:03,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:27:03,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:08,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-28 20:27:08,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:08,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:27:08,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-28 20:27:09,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-28 20:27:11,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761645509] [2023-11-28 20:27:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761645509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:11,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:27:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-11-28 20:27:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632486543] [2023-11-28 20:27:11,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 20:27:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 20:27:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:27:11,835 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-28 20:27:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:18,322 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2023-11-28 20:27:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-28 20:27:18,322 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 105 [2023-11-28 20:27:18,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:27:18,324 INFO L225 Difference]: With dead ends: 103 [2023-11-28 20:27:18,324 INFO L226 Difference]: Without dead ends: 102 [2023-11-28 20:27:18,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=835, Invalid=3587, Unknown=0, NotChecked=0, Total=4422 [2023-11-28 20:27:18,328 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:27:18,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 694 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 20:27:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-28 20:27:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-28 20:27:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:27:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2023-11-28 20:27:18,342 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 105 [2023-11-28 20:27:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:27:18,343 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2023-11-28 20:27:18,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-28 20:27:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2023-11-28 20:27:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-28 20:27:18,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:27:18,348 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:18,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-28 20:27:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:18,549 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:27:18,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -768765208, now seen corresponding path program 4 times [2023-11-28 20:27:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344301269] [2023-11-28 20:27:18,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:27:18,550 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 [2023-11-28 20:27:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:18,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:27:18,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:27:20,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:27:20,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:20,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-28 20:27:20,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2323 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2023-11-28 20:27:21,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2323 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2023-11-28 20:27:31,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344301269] [2023-11-28 20:27:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344301269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:31,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:27:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2023-11-28 20:27:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191340753] [2023-11-28 20:27:31,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-11-28 20:27:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:31,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-11-28 20:27:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=7499, Unknown=0, NotChecked=0, Total=8742 [2023-11-28 20:27:31,212 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 94 states, 93 states have (on average 1.5806451612903225) internal successors, (147), 94 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2023-11-28 20:28:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:28:16,275 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2023-11-28 20:28:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-28 20:28:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.5806451612903225) internal successors, (147), 94 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) Word has length 213 [2023-11-28 20:28:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:28:16,278 INFO L225 Difference]: With dead ends: 199 [2023-11-28 20:28:16,278 INFO L226 Difference]: Without dead ends: 198 [2023-11-28 20:28:16,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=3403, Invalid=15779, Unknown=0, NotChecked=0, Total=19182 [2023-11-28 20:28:16,285 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:28:16,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2058 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-28 20:28:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-28 20:28:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-11-28 20:28:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2023-11-28 20:28:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2023-11-28 20:28:16,298 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 213 [2023-11-28 20:28:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:28:16,299 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2023-11-28 20:28:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.5806451612903225) internal successors, (147), 94 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2023-11-28 20:28:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2023-11-28 20:28:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-11-28 20:28:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:28:16,310 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:16,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-28 20:28:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:28:16,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-28 20:28:16,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -270323464, now seen corresponding path program 5 times [2023-11-28 20:28:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:28:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571076227] [2023-11-28 20:28:16,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:28:16,512 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 [2023-11-28 20:28:16,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:28:16,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-28 20:28:16,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b1cdcc0-ce4f-4768-a9bc-c9200ab1674a/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-28 20:28:51,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2023-11-28 20:28:51,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:28:52,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 163 conjunts are in the unsatisfiable core [2023-11-28 20:28:52,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:32:51,451 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:33:50,484 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:34:50,982 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)