./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:57,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:57,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 22:23:57,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:57,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:57,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:57,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:57,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:57,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:57,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:57,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:57,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:57,348 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:57,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:57,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:23:57,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:57,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:57,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:23:57,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:57,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:23:57,352 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:23:57,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:23:57,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:23:57,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:57,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:57,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:57,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:57,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:57,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:57,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:57,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:23:57,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:23:57,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:23:57,359 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:57,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:23:57,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:57,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:57,361 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:57,361 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_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2023-11-06 22:23:57,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:57,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:57,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:57,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:57,689 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:57,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-06 22:24:00,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:24:01,067 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:24:01,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-06 22:24:01,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/data/f9f86fe68/2e2d64d9683c4d5dbd7bec2b92173848/FLAGc71616b74 [2023-11-06 22:24:01,096 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/data/f9f86fe68/2e2d64d9683c4d5dbd7bec2b92173848 [2023-11-06 22:24:01,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:24:01,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:24:01,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:01,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:24:01,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:24:01,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e437b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01, skipping insertion in model container [2023-11-06 22:24:01,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:01,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:01,336 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:24:01,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:01,368 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:24:01,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01 WrapperNode [2023-11-06 22:24:01,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:01,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:01,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:24:01,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:24:01,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,403 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-11-06 22:24:01,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:01,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:24:01,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:24:01,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:24:01,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:24:01,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:24:01,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:24:01,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:24:01,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (1/1) ... [2023-11-06 22:24:01,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:01,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:24:01,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:24:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2023-11-06 22:24:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2023-11-06 22:24:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2023-11-06 22:24:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2023-11-06 22:24:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:24:01,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:24:01,589 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:24:01,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:24:01,885 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:24:01,892 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:24:01,893 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:24:01,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:01 BoogieIcfgContainer [2023-11-06 22:24:01,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:24:01,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:24:01,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:24:01,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:24:01,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:24:01" (1/3) ... [2023-11-06 22:24:01,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620e06b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:01, skipping insertion in model container [2023-11-06 22:24:01,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:01" (2/3) ... [2023-11-06 22:24:01,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620e06b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:01, skipping insertion in model container [2023-11-06 22:24:01,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:01" (3/3) ... [2023-11-06 22:24:01,906 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2023-11-06 22:24:01,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:24:01,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:24:01,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:02,007 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=LoopsAndPotentialCycles, 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;@42d31abf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:02,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-06 22:24:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 52 states have internal predecessors, (60), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:24:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:24:02,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:02,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:02,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:02,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1898283155, now seen corresponding path program 1 times [2023-11-06 22:24:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128091643] [2023-11-06 22:24:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128091643] [2023-11-06 22:24:02,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128091643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:02,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:24:02,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045022549] [2023-11-06 22:24:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:02,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:24:02,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:24:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:24:02,284 INFO L87 Difference]: Start difference. First operand has 61 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 52 states have internal predecessors, (60), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:02,314 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2023-11-06 22:24:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:24:02,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:24:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:02,325 INFO L225 Difference]: With dead ends: 118 [2023-11-06 22:24:02,325 INFO L226 Difference]: Without dead ends: 57 [2023-11-06 22:24:02,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:24:02,333 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:02,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-06 22:24:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-06 22:24:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:24:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-11-06 22:24:02,390 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 9 [2023-11-06 22:24:02,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:02,391 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-11-06 22:24:02,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-11-06 22:24:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:24:02,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:02,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:02,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:24:02,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:02,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1897717126, now seen corresponding path program 1 times [2023-11-06 22:24:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645960680] [2023-11-06 22:24:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:02,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645960680] [2023-11-06 22:24:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645960680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760770074] [2023-11-06 22:24:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:02,513 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:02,579 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2023-11-06 22:24:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:02,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:24:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:02,582 INFO L225 Difference]: With dead ends: 111 [2023-11-06 22:24:02,582 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 22:24:02,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:02,585 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:02,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:02,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 22:24:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-06 22:24:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:24:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-11-06 22:24:02,598 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 9 [2023-11-06 22:24:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:02,599 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-11-06 22:24:02,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-11-06 22:24:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:24:02,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:02,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:24:02,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:02,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1419301016, now seen corresponding path program 1 times [2023-11-06 22:24:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022507830] [2023-11-06 22:24:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:02,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:02,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022507830] [2023-11-06 22:24:02,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022507830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:02,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:02,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:24:02,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087607461] [2023-11-06 22:24:02,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:02,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:02,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:02,660 INFO L87 Difference]: Start difference. First operand 58 states and 65 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:02,686 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2023-11-06 22:24:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:02,687 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:24:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:02,689 INFO L225 Difference]: With dead ends: 60 [2023-11-06 22:24:02,690 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 22:24:02,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:02,692 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 9 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 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 [2023-11-06 22:24:02,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 22:24:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-06 22:24:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:24:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-11-06 22:24:02,706 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2023-11-06 22:24:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:02,706 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-11-06 22:24:02,707 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-11-06 22:24:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:24:02,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:02,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:02,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:24:02,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:02,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1048658574, now seen corresponding path program 1 times [2023-11-06 22:24:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768337884] [2023-11-06 22:24:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768337884] [2023-11-06 22:24:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768337884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292893141] [2023-11-06 22:24:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:24:02,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:24:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:02,848 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:03,047 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2023-11-06 22:24:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:03,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 22:24:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:03,049 INFO L225 Difference]: With dead ends: 156 [2023-11-06 22:24:03,050 INFO L226 Difference]: Without dead ends: 103 [2023-11-06 22:24:03,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:03,053 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 53 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:03,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 364 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-06 22:24:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2023-11-06 22:24:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 71 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 22:24:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2023-11-06 22:24:03,074 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 14 [2023-11-06 22:24:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:03,074 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-11-06 22:24:03,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2023-11-06 22:24:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:24:03,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:03,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:03,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:24:03,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:03,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1204972684, now seen corresponding path program 1 times [2023-11-06 22:24:03,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:03,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333761629] [2023-11-06 22:24:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:03,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333761629] [2023-11-06 22:24:03,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333761629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:03,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:03,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:03,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812511469] [2023-11-06 22:24:03,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:03,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:03,154 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:03,225 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2023-11-06 22:24:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 22:24:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:03,227 INFO L225 Difference]: With dead ends: 187 [2023-11-06 22:24:03,228 INFO L226 Difference]: Without dead ends: 106 [2023-11-06 22:24:03,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:03,231 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:03,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 171 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-06 22:24:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2023-11-06 22:24:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 72 states have internal predecessors, (86), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 22:24:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2023-11-06 22:24:03,247 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 14 [2023-11-06 22:24:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:03,248 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2023-11-06 22:24:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2023-11-06 22:24:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:24:03,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:03,250 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:24:03,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:03,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1152590759, now seen corresponding path program 1 times [2023-11-06 22:24:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24904980] [2023-11-06 22:24:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:03,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:03,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24904980] [2023-11-06 22:24:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24904980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:03,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875477590] [2023-11-06 22:24:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:24:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:24:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:03,418 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:24:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:03,608 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2023-11-06 22:24:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:03,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-06 22:24:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:03,611 INFO L225 Difference]: With dead ends: 226 [2023-11-06 22:24:03,612 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 22:24:03,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:03,615 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 321 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 22:24:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2023-11-06 22:24:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 100 states have internal predecessors, (125), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-06 22:24:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2023-11-06 22:24:03,663 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 20 [2023-11-06 22:24:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:03,663 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2023-11-06 22:24:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:24:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2023-11-06 22:24:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:24:03,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:03,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:03,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:24:03,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:03,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash 461279503, now seen corresponding path program 1 times [2023-11-06 22:24:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:03,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437073636] [2023-11-06 22:24:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:03,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:03,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437073636] [2023-11-06 22:24:03,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437073636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:03,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:03,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917172022] [2023-11-06 22:24:03,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:03,764 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:03,876 INFO L93 Difference]: Finished difference Result 164 states and 202 transitions. [2023-11-06 22:24:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:03,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-06 22:24:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:03,880 INFO L225 Difference]: With dead ends: 164 [2023-11-06 22:24:03,880 INFO L226 Difference]: Without dead ends: 163 [2023-11-06 22:24:03,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:03,883 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 63 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:03,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 266 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-06 22:24:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2023-11-06 22:24:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.422680412371134) internal successors, (138), 111 states have internal predecessors, (138), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:24:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2023-11-06 22:24:03,907 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 22 [2023-11-06 22:24:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:03,907 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-06 22:24:03,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2023-11-06 22:24:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:24:03,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:03,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:03,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:24:03,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:03,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1414762759, now seen corresponding path program 1 times [2023-11-06 22:24:03,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:03,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891503093] [2023-11-06 22:24:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:03,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891503093] [2023-11-06 22:24:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891503093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:03,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380356385] [2023-11-06 22:24:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:03,997 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:04,092 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2023-11-06 22:24:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-06 22:24:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:04,095 INFO L225 Difference]: With dead ends: 164 [2023-11-06 22:24:04,095 INFO L226 Difference]: Without dead ends: 163 [2023-11-06 22:24:04,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:04,097 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 62 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:04,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 253 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-06 22:24:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2023-11-06 22:24:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 111 states have internal predecessors, (137), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:24:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2023-11-06 22:24:04,119 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2023-11-06 22:24:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:04,120 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2023-11-06 22:24:04,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2023-11-06 22:24:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:24:04,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:04,122 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:24:04,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:04,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash -376350556, now seen corresponding path program 1 times [2023-11-06 22:24:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941206640] [2023-11-06 22:24:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:04,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:04,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:04,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941206640] [2023-11-06 22:24:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941206640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:04,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:04,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:04,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701595749] [2023-11-06 22:24:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:04,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:04,271 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:04,427 INFO L93 Difference]: Finished difference Result 293 states and 377 transitions. [2023-11-06 22:24:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:24:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-06 22:24:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:04,441 INFO L225 Difference]: With dead ends: 293 [2023-11-06 22:24:04,443 INFO L226 Difference]: Without dead ends: 169 [2023-11-06 22:24:04,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:24:04,447 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 64 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:04,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 354 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-06 22:24:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 144. [2023-11-06 22:24:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 100 states have (on average 1.4) internal successors, (140), 114 states have internal predecessors, (140), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:24:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2023-11-06 22:24:04,479 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 28 [2023-11-06 22:24:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:04,480 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2023-11-06 22:24:04,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:24:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2023-11-06 22:24:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:24:04,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:04,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:04,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:24:04,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:04,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:04,483 INFO L85 PathProgramCache]: Analyzing trace with hash -896192804, now seen corresponding path program 1 times [2023-11-06 22:24:04,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:04,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882793871] [2023-11-06 22:24:04,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:04,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:04,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:04,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840931189] [2023-11-06 22:24:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:04,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:04,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:04,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:24:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:04,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:04,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:24:04,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882793871] [2023-11-06 22:24:04,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840931189] [2023-11-06 22:24:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840931189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532786462] [2023-11-06 22:24:04,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:04,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:04,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:04,675 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:24:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:04,816 INFO L93 Difference]: Finished difference Result 202 states and 281 transitions. [2023-11-06 22:24:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-06 22:24:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:04,822 INFO L225 Difference]: With dead ends: 202 [2023-11-06 22:24:04,822 INFO L226 Difference]: Without dead ends: 201 [2023-11-06 22:24:04,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:04,823 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:04,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 209 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-06 22:24:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-11-06 22:24:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 118 states have (on average 1.3644067796610169) internal successors, (161), 129 states have internal predecessors, (161), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2023-11-06 22:24:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2023-11-06 22:24:04,860 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 30 [2023-11-06 22:24:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:04,861 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2023-11-06 22:24:04,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:24:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2023-11-06 22:24:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:24:04,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:04,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:04,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:05,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:24:05,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:05,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2012173088, now seen corresponding path program 1 times [2023-11-06 22:24:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:05,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816650024] [2023-11-06 22:24:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:05,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:05,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610951415] [2023-11-06 22:24:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:05,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:05,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:05,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:24:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:05,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:24:05,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:24:05,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:05,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816650024] [2023-11-06 22:24:05,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610951415] [2023-11-06 22:24:05,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610951415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:05,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:05,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176624674] [2023-11-06 22:24:05,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:05,225 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:24:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:05,296 INFO L93 Difference]: Finished difference Result 202 states and 276 transitions. [2023-11-06 22:24:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-06 22:24:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:05,303 INFO L225 Difference]: With dead ends: 202 [2023-11-06 22:24:05,303 INFO L226 Difference]: Without dead ends: 201 [2023-11-06 22:24:05,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:05,305 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 18 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:05,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 162 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-06 22:24:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2023-11-06 22:24:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 122 states have (on average 1.3442622950819672) internal successors, (164), 133 states have internal predecessors, (164), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2023-11-06 22:24:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2023-11-06 22:24:05,337 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 31 [2023-11-06 22:24:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:05,337 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2023-11-06 22:24:05,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:24:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2023-11-06 22:24:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:24:05,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:05,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:05,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:24:05,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:05,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2047143774, now seen corresponding path program 1 times [2023-11-06 22:24:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294094566] [2023-11-06 22:24:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:05,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:05,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191629534] [2023-11-06 22:24:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:05,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:05,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:05,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:24:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:05,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:24:05,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:05,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294094566] [2023-11-06 22:24:05,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191629534] [2023-11-06 22:24:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191629534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:05,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:05,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568877282] [2023-11-06 22:24:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:24:05,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:24:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:05,799 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:24:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:05,886 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2023-11-06 22:24:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-11-06 22:24:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:05,892 INFO L225 Difference]: With dead ends: 257 [2023-11-06 22:24:05,892 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 22:24:05,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:05,894 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 41 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:05,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 171 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 22:24:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 201. [2023-11-06 22:24:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 155 states have internal predecessors, (192), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-06 22:24:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 273 transitions. [2023-11-06 22:24:05,921 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 273 transitions. Word has length 32 [2023-11-06 22:24:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:05,922 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 273 transitions. [2023-11-06 22:24:05,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:24:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 273 transitions. [2023-11-06 22:24:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:24:05,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:05,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:05,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:24:06,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:06,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash -963052382, now seen corresponding path program 1 times [2023-11-06 22:24:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465552638] [2023-11-06 22:24:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:06,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170525678] [2023-11-06 22:24:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:06,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:06,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:06,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:24:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:06,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:24:06,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:24:06,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465552638] [2023-11-06 22:24:07,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:07,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170525678] [2023-11-06 22:24:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170525678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:07,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:07,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-06 22:24:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497747631] [2023-11-06 22:24:07,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:24:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:24:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:07,216 INFO L87 Difference]: Start difference. First operand 201 states and 273 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:24:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:07,314 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2023-11-06 22:24:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2023-11-06 22:24:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:07,319 INFO L225 Difference]: With dead ends: 256 [2023-11-06 22:24:07,319 INFO L226 Difference]: Without dead ends: 255 [2023-11-06 22:24:07,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:07,320 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 23 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:07,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 224 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-06 22:24:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2023-11-06 22:24:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 151 states have (on average 1.2913907284768211) internal successors, (195), 159 states have internal predecessors, (195), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-06 22:24:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2023-11-06 22:24:07,341 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 33 [2023-11-06 22:24:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:07,342 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2023-11-06 22:24:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:24:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2023-11-06 22:24:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 22:24:07,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:07,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:07,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:24:07,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:07,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1243028580, now seen corresponding path program 1 times [2023-11-06 22:24:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733570553] [2023-11-06 22:24:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:07,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:07,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992284203] [2023-11-06 22:24:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:07,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:07,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:07,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:07,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:24:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:07,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:07,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:07,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733570553] [2023-11-06 22:24:07,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992284203] [2023-11-06 22:24:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992284203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:07,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:07,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946763106] [2023-11-06 22:24:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:07,643 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:07,672 INFO L93 Difference]: Finished difference Result 205 states and 276 transitions. [2023-11-06 22:24:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-06 22:24:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:07,675 INFO L225 Difference]: With dead ends: 205 [2023-11-06 22:24:07,675 INFO L226 Difference]: Without dead ends: 204 [2023-11-06 22:24:07,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:07,676 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 154 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-06 22:24:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-06 22:24:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 151 states have (on average 1.2781456953642385) internal successors, (193), 158 states have internal predecessors, (193), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-06 22:24:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 274 transitions. [2023-11-06 22:24:07,693 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 274 transitions. Word has length 38 [2023-11-06 22:24:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:07,694 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 274 transitions. [2023-11-06 22:24:07,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 274 transitions. [2023-11-06 22:24:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:24:07,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:07,695 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:07,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:07,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:24:07,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:07,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash 120819793, now seen corresponding path program 1 times [2023-11-06 22:24:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:07,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002654953] [2023-11-06 22:24:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:07,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266207453] [2023-11-06 22:24:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:07,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:07,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:24:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:07,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:07,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:08,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002654953] [2023-11-06 22:24:08,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266207453] [2023-11-06 22:24:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266207453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996657069] [2023-11-06 22:24:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:08,006 INFO L87 Difference]: Start difference. First operand 204 states and 274 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:08,043 INFO L93 Difference]: Finished difference Result 215 states and 287 transitions. [2023-11-06 22:24:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-11-06 22:24:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:08,061 INFO L225 Difference]: With dead ends: 215 [2023-11-06 22:24:08,061 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 22:24:08,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:08,064 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:08,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 172 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 22:24:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-06 22:24:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 160 states have (on average 1.2625) internal successors, (202), 165 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-06 22:24:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2023-11-06 22:24:08,081 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 39 [2023-11-06 22:24:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:08,083 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2023-11-06 22:24:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2023-11-06 22:24:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:24:08,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:08,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:08,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:08,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:24:08,291 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:08,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:08,291 INFO L85 PathProgramCache]: Analyzing trace with hash 663521416, now seen corresponding path program 1 times [2023-11-06 22:24:08,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370276985] [2023-11-06 22:24:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:08,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004671053] [2023-11-06 22:24:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:08,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:08,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:08,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:24:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:08,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:08,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:24:08,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:08,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370276985] [2023-11-06 22:24:08,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004671053] [2023-11-06 22:24:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004671053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:08,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967014950] [2023-11-06 22:24:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:08,392 INFO L87 Difference]: Start difference. First operand 214 states and 285 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:08,425 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2023-11-06 22:24:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:08,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-11-06 22:24:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:08,427 INFO L225 Difference]: With dead ends: 214 [2023-11-06 22:24:08,427 INFO L226 Difference]: Without dead ends: 213 [2023-11-06 22:24:08,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:08,429 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:08,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 148 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-06 22:24:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-06 22:24:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 160 states have (on average 1.25625) internal successors, (201), 164 states have internal predecessors, (201), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-06 22:24:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2023-11-06 22:24:08,449 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2023-11-06 22:24:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:08,449 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2023-11-06 22:24:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2023-11-06 22:24:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 22:24:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:08,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:08,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:24:08,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:08,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -905672465, now seen corresponding path program 1 times [2023-11-06 22:24:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961265669] [2023-11-06 22:24:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:08,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:08,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156087463] [2023-11-06 22:24:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:08,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:08,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:08,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:24:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:08,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:08,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:24:08,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961265669] [2023-11-06 22:24:08,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156087463] [2023-11-06 22:24:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156087463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:08,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:08,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691744031] [2023-11-06 22:24:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:08,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:08,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:08,818 INFO L87 Difference]: Start difference. First operand 213 states and 284 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:08,851 INFO L93 Difference]: Finished difference Result 219 states and 289 transitions. [2023-11-06 22:24:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:08,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-06 22:24:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:08,854 INFO L225 Difference]: With dead ends: 219 [2023-11-06 22:24:08,854 INFO L226 Difference]: Without dead ends: 218 [2023-11-06 22:24:08,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:08,855 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 5 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:08,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 162 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-06 22:24:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2023-11-06 22:24:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 164 states have (on average 1.25) internal successors, (205), 168 states have internal predecessors, (205), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-06 22:24:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 288 transitions. [2023-11-06 22:24:08,871 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 288 transitions. Word has length 44 [2023-11-06 22:24:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:08,872 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 288 transitions. [2023-11-06 22:24:08,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:24:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 288 transitions. [2023-11-06 22:24:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:24:08,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:08,873 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:08,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:09,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:24:09,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:09,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash 249516746, now seen corresponding path program 1 times [2023-11-06 22:24:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957830872] [2023-11-06 22:24:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:09,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:09,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:09,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435785414] [2023-11-06 22:24:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:09,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:09,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:09,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:24:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:09,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:24:09,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:09,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:09,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957830872] [2023-11-06 22:24:09,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435785414] [2023-11-06 22:24:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435785414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:09,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:24:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403612336] [2023-11-06 22:24:09,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:24:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:24:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:24:09,366 INFO L87 Difference]: Start difference. First operand 217 states and 288 transitions. Second operand has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:09,747 INFO L93 Difference]: Finished difference Result 311 states and 404 transitions. [2023-11-06 22:24:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:24:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2023-11-06 22:24:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:09,751 INFO L225 Difference]: With dead ends: 311 [2023-11-06 22:24:09,751 INFO L226 Difference]: Without dead ends: 310 [2023-11-06 22:24:09,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:24:09,753 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 179 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:09,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 445 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-06 22:24:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2023-11-06 22:24:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 212 states have (on average 1.2877358490566038) internal successors, (273), 218 states have internal predecessors, (273), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2023-11-06 22:24:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 384 transitions. [2023-11-06 22:24:09,776 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 384 transitions. Word has length 48 [2023-11-06 22:24:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:09,789 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 384 transitions. [2023-11-06 22:24:09,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 384 transitions. [2023-11-06 22:24:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:24:09,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:09,791 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:09,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:09,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:24:09,997 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:09,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1302881257, now seen corresponding path program 1 times [2023-11-06 22:24:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756000508] [2023-11-06 22:24:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:10,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:10,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905842735] [2023-11-06 22:24:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:10,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:10,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:10,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:10,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:24:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:10,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:10,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 22:24:10,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:10,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756000508] [2023-11-06 22:24:10,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905842735] [2023-11-06 22:24:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905842735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360919969] [2023-11-06 22:24:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:10,163 INFO L87 Difference]: Start difference. First operand 280 states and 384 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:10,253 INFO L93 Difference]: Finished difference Result 501 states and 690 transitions. [2023-11-06 22:24:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2023-11-06 22:24:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:10,256 INFO L225 Difference]: With dead ends: 501 [2023-11-06 22:24:10,256 INFO L226 Difference]: Without dead ends: 255 [2023-11-06 22:24:10,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:10,258 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:10,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 201 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-06 22:24:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2023-11-06 22:24:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 192 states have (on average 1.2760416666666667) internal successors, (245), 199 states have internal predecessors, (245), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2023-11-06 22:24:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 343 transitions. [2023-11-06 22:24:10,283 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 343 transitions. Word has length 54 [2023-11-06 22:24:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:10,283 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 343 transitions. [2023-11-06 22:24:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 343 transitions. [2023-11-06 22:24:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:24:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:10,285 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:10,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:10,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:10,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 383045525, now seen corresponding path program 2 times [2023-11-06 22:24:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640486253] [2023-11-06 22:24:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:10,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:10,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852060912] [2023-11-06 22:24:10,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:10,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:10,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:10,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:24:10,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:10,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:10,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:24:10,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:24:10,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:10,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640486253] [2023-11-06 22:24:10,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852060912] [2023-11-06 22:24:10,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852060912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:24:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189368103] [2023-11-06 22:24:10,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:10,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:10,632 INFO L87 Difference]: Start difference. First operand 254 states and 343 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:10,833 INFO L93 Difference]: Finished difference Result 521 states and 721 transitions. [2023-11-06 22:24:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2023-11-06 22:24:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:10,837 INFO L225 Difference]: With dead ends: 521 [2023-11-06 22:24:10,837 INFO L226 Difference]: Without dead ends: 305 [2023-11-06 22:24:10,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:24:10,839 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 56 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:10,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 355 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-06 22:24:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 298. [2023-11-06 22:24:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 226 states have (on average 1.3053097345132743) internal successors, (295), 231 states have internal predecessors, (295), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-06 22:24:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 415 transitions. [2023-11-06 22:24:10,861 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 415 transitions. Word has length 54 [2023-11-06 22:24:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:10,862 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 415 transitions. [2023-11-06 22:24:10,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 415 transitions. [2023-11-06 22:24:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:24:10,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:10,863 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:10,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:11,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:11,069 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:11,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash -744620115, now seen corresponding path program 1 times [2023-11-06 22:24:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:11,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606627072] [2023-11-06 22:24:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:11,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638996854] [2023-11-06 22:24:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:11,079 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:11,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:24:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:11,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:11,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:24:11,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:11,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606627072] [2023-11-06 22:24:11,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638996854] [2023-11-06 22:24:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638996854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594030539] [2023-11-06 22:24:11,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:11,208 INFO L87 Difference]: Start difference. First operand 298 states and 415 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:24:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:11,245 INFO L93 Difference]: Finished difference Result 298 states and 415 transitions. [2023-11-06 22:24:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2023-11-06 22:24:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:11,248 INFO L225 Difference]: With dead ends: 298 [2023-11-06 22:24:11,249 INFO L226 Difference]: Without dead ends: 297 [2023-11-06 22:24:11,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:11,250 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 218 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-06 22:24:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-06 22:24:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 226 states have (on average 1.2920353982300885) internal successors, (292), 230 states have internal predecessors, (292), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-06 22:24:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 412 transitions. [2023-11-06 22:24:11,271 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 412 transitions. Word has length 55 [2023-11-06 22:24:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:11,271 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 412 transitions. [2023-11-06 22:24:11,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:24:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 412 transitions. [2023-11-06 22:24:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:24:11,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:11,272 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:11,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:11,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:24:11,478 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:11,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1364436842, now seen corresponding path program 1 times [2023-11-06 22:24:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828002769] [2023-11-06 22:24:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:11,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066153421] [2023-11-06 22:24:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:11,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:11,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:24:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:11,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:24:11,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:11,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:24:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828002769] [2023-11-06 22:24:11,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066153421] [2023-11-06 22:24:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066153421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:11,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:11,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-06 22:24:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516500139] [2023-11-06 22:24:11,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:24:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:24:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:24:11,792 INFO L87 Difference]: Start difference. First operand 297 states and 412 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:12,021 INFO L93 Difference]: Finished difference Result 536 states and 737 transitions. [2023-11-06 22:24:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:24:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2023-11-06 22:24:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:12,025 INFO L225 Difference]: With dead ends: 536 [2023-11-06 22:24:12,025 INFO L226 Difference]: Without dead ends: 326 [2023-11-06 22:24:12,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:24:12,027 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:12,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 327 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-06 22:24:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 309. [2023-11-06 22:24:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 238 states have (on average 1.2857142857142858) internal successors, (306), 242 states have internal predecessors, (306), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-06 22:24:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 426 transitions. [2023-11-06 22:24:12,051 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 426 transitions. Word has length 54 [2023-11-06 22:24:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:12,051 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 426 transitions. [2023-11-06 22:24:12,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:24:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 426 transitions. [2023-11-06 22:24:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:24:12,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:12,053 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:12,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:12,258 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:12,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1608387041, now seen corresponding path program 1 times [2023-11-06 22:24:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:12,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75141359] [2023-11-06 22:24:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:12,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:12,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:12,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851089419] [2023-11-06 22:24:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:12,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:12,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:24:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:12,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:24:12,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:24:12,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:24:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75141359] [2023-11-06 22:24:12,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851089419] [2023-11-06 22:24:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851089419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:12,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-06 22:24:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120023791] [2023-11-06 22:24:12,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:12,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:24:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:24:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:24:12,909 INFO L87 Difference]: Start difference. First operand 309 states and 426 transitions. Second operand has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 22:24:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:15,567 INFO L93 Difference]: Finished difference Result 607 states and 825 transitions. [2023-11-06 22:24:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:24:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 56 [2023-11-06 22:24:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:15,571 INFO L225 Difference]: With dead ends: 607 [2023-11-06 22:24:15,571 INFO L226 Difference]: Without dead ends: 391 [2023-11-06 22:24:15,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:24:15,574 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 137 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:15,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 762 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:24:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-06 22:24:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 370. [2023-11-06 22:24:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 289 states have (on average 1.2698961937716262) internal successors, (367), 288 states have internal predecessors, (367), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 65 states have call predecessors, (85), 52 states have call successors, (85) [2023-11-06 22:24:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 504 transitions. [2023-11-06 22:24:15,601 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 504 transitions. Word has length 56 [2023-11-06 22:24:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:15,601 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 504 transitions. [2023-11-06 22:24:15,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 22:24:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 504 transitions. [2023-11-06 22:24:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:24:15,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:15,602 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:15,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:15,808 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:15,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 515976557, now seen corresponding path program 1 times [2023-11-06 22:24:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:15,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340402435] [2023-11-06 22:24:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:15,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042566816] [2023-11-06 22:24:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:15,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:15,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:15,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:24:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:15,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:24:15,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:24:15,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340402435] [2023-11-06 22:24:15,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042566816] [2023-11-06 22:24:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042566816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944519909] [2023-11-06 22:24:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:24:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:24:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:15,940 INFO L87 Difference]: Start difference. First operand 370 states and 504 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:24:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:16,067 INFO L93 Difference]: Finished difference Result 696 states and 943 transitions. [2023-11-06 22:24:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2023-11-06 22:24:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:16,071 INFO L225 Difference]: With dead ends: 696 [2023-11-06 22:24:16,071 INFO L226 Difference]: Without dead ends: 375 [2023-11-06 22:24:16,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:16,074 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 42 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:16,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 357 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-06 22:24:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 366. [2023-11-06 22:24:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.2587412587412588) internal successors, (360), 285 states have internal predecessors, (360), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-11-06 22:24:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 489 transitions. [2023-11-06 22:24:16,098 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 489 transitions. Word has length 64 [2023-11-06 22:24:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:16,098 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 489 transitions. [2023-11-06 22:24:16,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:24:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 489 transitions. [2023-11-06 22:24:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:24:16,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:16,100 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:16,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:16,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:16,306 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:16,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1931668771, now seen corresponding path program 1 times [2023-11-06 22:24:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064566984] [2023-11-06 22:24:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:16,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645203549] [2023-11-06 22:24:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:16,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:16,316 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:16,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:24:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:16,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:24:16,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:24:16,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064566984] [2023-11-06 22:24:16,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645203549] [2023-11-06 22:24:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645203549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:16,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:16,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117300842] [2023-11-06 22:24:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:16,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:16,478 INFO L87 Difference]: Start difference. First operand 366 states and 489 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:24:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:16,599 INFO L93 Difference]: Finished difference Result 373 states and 489 transitions. [2023-11-06 22:24:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:24:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2023-11-06 22:24:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:16,603 INFO L225 Difference]: With dead ends: 373 [2023-11-06 22:24:16,603 INFO L226 Difference]: Without dead ends: 372 [2023-11-06 22:24:16,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:24:16,605 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:16,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 230 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-06 22:24:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 366. [2023-11-06 22:24:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.2517482517482517) internal successors, (358), 285 states have internal predecessors, (358), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-11-06 22:24:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 487 transitions. [2023-11-06 22:24:16,635 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 487 transitions. Word has length 66 [2023-11-06 22:24:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:16,636 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 487 transitions. [2023-11-06 22:24:16,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:24:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 487 transitions. [2023-11-06 22:24:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:24:16,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:16,638 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:16,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:24:16,849 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:16,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash -247810189, now seen corresponding path program 1 times [2023-11-06 22:24:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:16,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965921722] [2023-11-06 22:24:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:16,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:16,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127486226] [2023-11-06 22:24:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:16,872 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:16,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:24:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:16,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:24:16,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:24:17,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:24:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965921722] [2023-11-06 22:24:17,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127486226] [2023-11-06 22:24:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127486226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:17,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-06 22:24:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408787351] [2023-11-06 22:24:17,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:24:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:24:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:24:17,178 INFO L87 Difference]: Start difference. First operand 366 states and 487 transitions. Second operand has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:24:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:17,428 INFO L93 Difference]: Finished difference Result 446 states and 594 transitions. [2023-11-06 22:24:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:24:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 67 [2023-11-06 22:24:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:17,432 INFO L225 Difference]: With dead ends: 446 [2023-11-06 22:24:17,432 INFO L226 Difference]: Without dead ends: 445 [2023-11-06 22:24:17,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:24:17,433 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 110 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:17,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 510 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-06 22:24:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 425. [2023-11-06 22:24:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 331 states have (on average 1.256797583081571) internal successors, (416), 329 states have internal predecessors, (416), 62 states have call successors, (62), 19 states have call predecessors, (62), 22 states have return successors, (100), 76 states have call predecessors, (100), 62 states have call successors, (100) [2023-11-06 22:24:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 578 transitions. [2023-11-06 22:24:17,495 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 578 transitions. Word has length 67 [2023-11-06 22:24:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:17,495 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 578 transitions. [2023-11-06 22:24:17,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:24:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 578 transitions. [2023-11-06 22:24:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:24:17,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:17,497 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:17,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:17,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:24:17,703 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:17,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:17,704 INFO L85 PathProgramCache]: Analyzing trace with hash -588386521, now seen corresponding path program 1 times [2023-11-06 22:24:17,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:17,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203916901] [2023-11-06 22:24:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:17,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490321098] [2023-11-06 22:24:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:17,715 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:17,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:24:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:17,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:24:17,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:24:17,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-06 22:24:17,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203916901] [2023-11-06 22:24:17,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490321098] [2023-11-06 22:24:17,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490321098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:17,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:17,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-11-06 22:24:17,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905977825] [2023-11-06 22:24:17,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:17,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:24:17,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:24:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:24:17,992 INFO L87 Difference]: Start difference. First operand 425 states and 578 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:24:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:18,261 INFO L93 Difference]: Finished difference Result 821 states and 1126 transitions. [2023-11-06 22:24:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:24:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 76 [2023-11-06 22:24:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:18,265 INFO L225 Difference]: With dead ends: 821 [2023-11-06 22:24:18,265 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:24:18,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:24:18,269 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 60 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:18,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 557 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:24:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 426. [2023-11-06 22:24:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 331 states have (on average 1.2537764350453173) internal successors, (415), 330 states have internal predecessors, (415), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2023-11-06 22:24:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 575 transitions. [2023-11-06 22:24:18,301 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 575 transitions. Word has length 76 [2023-11-06 22:24:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:18,301 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 575 transitions. [2023-11-06 22:24:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:24:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 575 transitions. [2023-11-06 22:24:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:24:18,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:18,303 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:18,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:18,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:24:18,511 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:18,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash -713206344, now seen corresponding path program 2 times [2023-11-06 22:24:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:18,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841477111] [2023-11-06 22:24:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:18,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:18,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384725870] [2023-11-06 22:24:18,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:18,526 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:18,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:24:18,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:18,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:18,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:24:18,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 22:24:18,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 22:24:18,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841477111] [2023-11-06 22:24:18,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384725870] [2023-11-06 22:24:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384725870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:18,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:18,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:24:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306183279] [2023-11-06 22:24:18,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:24:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:24:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:24:18,919 INFO L87 Difference]: Start difference. First operand 426 states and 575 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:24:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:19,399 INFO L93 Difference]: Finished difference Result 484 states and 630 transitions. [2023-11-06 22:24:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:24:19,400 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 72 [2023-11-06 22:24:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:19,403 INFO L225 Difference]: With dead ends: 484 [2023-11-06 22:24:19,404 INFO L226 Difference]: Without dead ends: 483 [2023-11-06 22:24:19,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:24:19,405 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 131 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:19,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 626 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:24:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-11-06 22:24:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 475. [2023-11-06 22:24:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.2439024390243902) internal successors, (459), 370 states have internal predecessors, (459), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2023-11-06 22:24:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 628 transitions. [2023-11-06 22:24:19,439 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 628 transitions. Word has length 72 [2023-11-06 22:24:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:19,439 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 628 transitions. [2023-11-06 22:24:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:24:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 628 transitions. [2023-11-06 22:24:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:24:19,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:19,441 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:19,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-06 22:24:19,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:24:19,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:19,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1724138098, now seen corresponding path program 1 times [2023-11-06 22:24:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:19,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469184587] [2023-11-06 22:24:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:19,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344816019] [2023-11-06 22:24:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:19,660 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:19,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:24:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:19,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:24:19,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:24:19,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469184587] [2023-11-06 22:24:19,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344816019] [2023-11-06 22:24:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344816019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:19,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:19,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:24:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109723364] [2023-11-06 22:24:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:19,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:24:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:24:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:19,848 INFO L87 Difference]: Start difference. First operand 475 states and 628 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:24:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:20,079 INFO L93 Difference]: Finished difference Result 892 states and 1190 transitions. [2023-11-06 22:24:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:24:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-11-06 22:24:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:20,083 INFO L225 Difference]: With dead ends: 892 [2023-11-06 22:24:20,083 INFO L226 Difference]: Without dead ends: 474 [2023-11-06 22:24:20,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:24:20,087 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:20,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 335 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-06 22:24:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 467. [2023-11-06 22:24:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 362 states have (on average 1.2458563535911602) internal successors, (451), 364 states have internal predecessors, (451), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2023-11-06 22:24:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 618 transitions. [2023-11-06 22:24:20,117 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 618 transitions. Word has length 76 [2023-11-06 22:24:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:20,117 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 618 transitions. [2023-11-06 22:24:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:24:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 618 transitions. [2023-11-06 22:24:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:24:20,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:20,120 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:20,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:20,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:24:20,325 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:20,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:20,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1228745485, now seen corresponding path program 2 times [2023-11-06 22:24:20,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:20,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424132890] [2023-11-06 22:24:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:20,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:20,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672546715] [2023-11-06 22:24:20,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:20,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:20,337 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:20,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:24:20,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:20,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:20,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:24:20,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:24:20,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424132890] [2023-11-06 22:24:21,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672546715] [2023-11-06 22:24:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672546715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:21,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-06 22:24:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268034318] [2023-11-06 22:24:21,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:21,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:24:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:24:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:24:21,004 INFO L87 Difference]: Start difference. First operand 467 states and 618 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:24:21,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:21,246 INFO L93 Difference]: Finished difference Result 501 states and 652 transitions. [2023-11-06 22:24:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:24:21,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-06 22:24:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:21,250 INFO L225 Difference]: With dead ends: 501 [2023-11-06 22:24:21,251 INFO L226 Difference]: Without dead ends: 500 [2023-11-06 22:24:21,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:24:21,252 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 56 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:21,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 436 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-06 22:24:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 491. [2023-11-06 22:24:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 381 states have (on average 1.236220472440945) internal successors, (471), 383 states have internal predecessors, (471), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 80 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-06 22:24:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 642 transitions. [2023-11-06 22:24:21,284 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 642 transitions. Word has length 80 [2023-11-06 22:24:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:21,284 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 642 transitions. [2023-11-06 22:24:21,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:24:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 642 transitions. [2023-11-06 22:24:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:24:21,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:21,286 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:21,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-06 22:24:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:21,492 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:21,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1048752312, now seen corresponding path program 1 times [2023-11-06 22:24:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059043989] [2023-11-06 22:24:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:21,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639179518] [2023-11-06 22:24:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:21,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:21,503 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:21,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:24:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:21,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:24:21,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 22:24:21,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:21,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059043989] [2023-11-06 22:24:21,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639179518] [2023-11-06 22:24:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639179518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:21,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839425218] [2023-11-06 22:24:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:21,752 INFO L87 Difference]: Start difference. First operand 491 states and 642 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:24:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:21,851 INFO L93 Difference]: Finished difference Result 495 states and 650 transitions. [2023-11-06 22:24:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:24:21,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2023-11-06 22:24:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:21,857 INFO L225 Difference]: With dead ends: 495 [2023-11-06 22:24:21,858 INFO L226 Difference]: Without dead ends: 494 [2023-11-06 22:24:21,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:21,859 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:21,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 262 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:24:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-06 22:24:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 490. [2023-11-06 22:24:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 381 states have (on average 1.2125984251968505) internal successors, (462), 382 states have internal predecessors, (462), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 80 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-06 22:24:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 633 transitions. [2023-11-06 22:24:21,892 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 633 transitions. Word has length 84 [2023-11-06 22:24:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:21,892 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 633 transitions. [2023-11-06 22:24:21,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:24:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 633 transitions. [2023-11-06 22:24:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:24:21,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:21,894 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:21,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:22,099 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:22,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1848416756, now seen corresponding path program 1 times [2023-11-06 22:24:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400058887] [2023-11-06 22:24:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:22,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513134602] [2023-11-06 22:24:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:22,111 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:22,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:24:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:22,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:24:22,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-06 22:24:22,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:22,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400058887] [2023-11-06 22:24:22,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513134602] [2023-11-06 22:24:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513134602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:22,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:22,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-06 22:24:22,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180601400] [2023-11-06 22:24:22,501 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:22,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:22,502 INFO L87 Difference]: Start difference. First operand 490 states and 633 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:24:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:22,569 INFO L93 Difference]: Finished difference Result 529 states and 689 transitions. [2023-11-06 22:24:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-11-06 22:24:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:22,574 INFO L225 Difference]: With dead ends: 529 [2023-11-06 22:24:22,574 INFO L226 Difference]: Without dead ends: 528 [2023-11-06 22:24:22,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:22,577 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:22,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 199 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:24:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-06 22:24:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 487. [2023-11-06 22:24:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 378 states have (on average 1.2063492063492063) internal successors, (456), 380 states have internal predecessors, (456), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-06 22:24:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 627 transitions. [2023-11-06 22:24:22,622 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 627 transitions. Word has length 85 [2023-11-06 22:24:22,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:22,622 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 627 transitions. [2023-11-06 22:24:22,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:24:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 627 transitions. [2023-11-06 22:24:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:24:22,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:22,624 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:22,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:22,830 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:22,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1466344650, now seen corresponding path program 2 times [2023-11-06 22:24:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855242571] [2023-11-06 22:24:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:22,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131216529] [2023-11-06 22:24:22,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:22,862 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:22,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:24:22,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:22,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:22,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:24:22,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-06 22:24:23,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855242571] [2023-11-06 22:24:23,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:24:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131216529] [2023-11-06 22:24:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131216529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:23,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:24:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792779790] [2023-11-06 22:24:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:24:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:24:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:23,282 INFO L87 Difference]: Start difference. First operand 487 states and 627 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:24:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:23,648 INFO L93 Difference]: Finished difference Result 491 states and 635 transitions. [2023-11-06 22:24:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:24:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2023-11-06 22:24:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:23,652 INFO L225 Difference]: With dead ends: 491 [2023-11-06 22:24:23,652 INFO L226 Difference]: Without dead ends: 490 [2023-11-06 22:24:23,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:23,654 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:23,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 211 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:24:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-06 22:24:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2023-11-06 22:24:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 378 states have (on average 1.1825396825396826) internal successors, (447), 379 states have internal predecessors, (447), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-06 22:24:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 618 transitions. [2023-11-06 22:24:23,687 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 618 transitions. Word has length 86 [2023-11-06 22:24:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:23,688 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 618 transitions. [2023-11-06 22:24:23,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:24:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 618 transitions. [2023-11-06 22:24:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:24:23,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:23,689 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:23,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-06 22:24:23,895 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:24:23,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1787956042, now seen corresponding path program 1 times [2023-11-06 22:24:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088372470] [2023-11-06 22:24:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:23,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:24:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451843307] [2023-11-06 22:24:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:23,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:23,906 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:23,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:24:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:23,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:24:23,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-06 22:24:24,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:07,320 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:25:13,579 WARN L861 $PredicateComparison]: unable to prove that (and (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse1 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse0 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse1))) (or (= 2147483647 .cse0) (< .cse0 2147483647)))) (< .cse1 0) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse2 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse2 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse3 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse4 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2))) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3) 0)) (= 2147483647 .cse4) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3)) (< .cse4 2147483647))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse5 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse6 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5) 2147483648) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6) 0)) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5) 0))))) (< (+ .cse5 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse8 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse7 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse7 0) (< 0 (+ .cse8 1)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse9 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7))) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8)) (= 2147483647 .cse9) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8) 0) (< .cse9 2147483647))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse10 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse10 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse11 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10) 0) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10) 2147483647))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse12 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse12 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse13 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse13) 0)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12) 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse13)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12) 2147483647))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse14 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse14 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse16 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse15 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14))) (or (= 2147483647 .cse15) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16)) (< .cse15 2147483647))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse17 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17) 2147483649)) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< (+ .cse17 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse19 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse18 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18) 2147483648) (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19) 0) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18) 0)))) (< 0 (+ .cse19 1)) (< (+ .cse18 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse20 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse20) 2147483648) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse20) 0)))) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< (+ .cse20 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse21 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse21 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21) 2147483648) (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse22 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse23 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22) 2147483649) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23))))) (< (+ .cse22 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse24 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse25 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< 0 (+ .cse24 1)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25) 2147483649) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24) 0))) (< (+ .cse25 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse27 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse26 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27) 2147483649) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26))))) (< (+ .cse27 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse28 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse29 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 2147483648) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 0))))) (< (+ .cse28 2147483648) 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse30 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ .cse30 2147483648) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30) 2147483648) (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30) 0))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse31 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ .cse31 2147483648) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse32 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31))) (or (< .cse32 2147483648) (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (= .cse32 2147483648))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse33 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n)) (.cse34 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< .cse33 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33) 0) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34) 0) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33) 2147483647))) (< 0 (+ .cse34 1))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse35 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse35 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35) 0) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35) 2147483647))) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))))))) is different from true [2023-11-06 22:25:24,464 WARN L861 $PredicateComparison]: unable to prove that (and (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse0 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0) 2147483647) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0) 0))) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< .cse0 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse2 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse1 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2))) (or (= 2147483647 .cse1) (< .cse1 2147483647)))) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< .cse2 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse3 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse3) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse4 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3))) (or (= .cse4 2147483648) (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< .cse4 2147483648))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse5 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse5) 0) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5) 2147483649))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse7 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse6 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse6) 0) (< 0 (+ .cse7 1)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7) 0) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6) 2147483649)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse8 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse8) 0) (< 0 (+ 2147483649 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse9 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse9) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse10 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9) 2147483648) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse11 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse11) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse12 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12) 0)) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11) 2147483648))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse15 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse13 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse15)) (.cse14 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (= 2147483647 .cse13) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14) 0)) (< .cse13 2147483647) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14))))) (< .cse15 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse16 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse16) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse17 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17) 0)) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16) 2147483649))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse18 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse18) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse19 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18) 2147483649))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse22 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse20 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22)) (.cse21 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (= 2147483647 .cse20) (< .cse20 2147483647) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21))))) (< .cse22 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse23 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< (+ 2147483648 .cse23) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse24 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse25 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< 0 (+ .cse24 1)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25) 2147483647) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24) 0) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25) 0))) (< .cse25 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse27 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse26 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27) 2147483647) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27) 0)))) (< .cse27 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse28 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n)) (.cse29 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< (+ 2147483648 .cse28) 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29)) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 0)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 2147483648) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29) 0))) (< 0 (+ .cse29 1))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse30 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse30 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse31 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse32 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|))) (or (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 1)) (< (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31) 2147483647) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse32) 0) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse32)) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31) 0)))) (< .cse31 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse34 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9|)) (.cse35 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse33 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35))) (or (= 2147483647 .cse33) (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34)) (< .cse33 2147483647) (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34) 0)))) (< 0 (+ .cse34 1)) (< .cse35 0))))) is different from true [2023-11-06 22:25:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:24,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088372470] [2023-11-06 22:25:24,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:24,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451843307] [2023-11-06 22:25:24,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451843307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:24,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:24,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-06 22:25:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301212568] [2023-11-06 22:25:24,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:25:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:25:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=440, Unknown=11, NotChecked=86, Total=600 [2023-11-06 22:25:24,473 INFO L87 Difference]: Start difference. First operand 486 states and 618 transitions. Second operand has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-06 22:25:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:38,916 INFO L93 Difference]: Finished difference Result 533 states and 705 transitions. [2023-11-06 22:25:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:25:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 87 [2023-11-06 22:25:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:38,920 INFO L225 Difference]: With dead ends: 533 [2023-11-06 22:25:38,921 INFO L226 Difference]: Without dead ends: 532 [2023-11-06 22:25:38,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=141, Invalid=974, Unknown=15, NotChecked=130, Total=1260 [2023-11-06 22:25:38,922 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 67 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:38,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 504 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:25:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-06 22:25:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 498. [2023-11-06 22:25:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 388 states have (on average 1.1778350515463918) internal successors, (457), 389 states have internal predecessors, (457), 68 states have call successors, (68), 27 states have call predecessors, (68), 34 states have return successors, (106), 81 states have call predecessors, (106), 68 states have call successors, (106) [2023-11-06 22:25:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 631 transitions. [2023-11-06 22:25:38,957 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 631 transitions. Word has length 87 [2023-11-06 22:25:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 631 transitions. [2023-11-06 22:25:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-06 22:25:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 631 transitions. [2023-11-06 22:25:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 22:25:38,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:38,960 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:38,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-06 22:25:39,166 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:39,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1619394254, now seen corresponding path program 2 times [2023-11-06 22:25:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:39,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640735130] [2023-11-06 22:25:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:39,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:39,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096753697] [2023-11-06 22:25:39,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:39,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:39,178 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:39,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:25:39,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:39,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:39,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:25:39,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-06 22:25:39,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 22:25:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640735130] [2023-11-06 22:25:39,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096753697] [2023-11-06 22:25:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096753697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:39,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:39,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2023-11-06 22:25:39,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227809062] [2023-11-06 22:25:39,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:39,704 INFO L87 Difference]: Start difference. First operand 498 states and 631 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:25:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:40,146 INFO L93 Difference]: Finished difference Result 945 states and 1243 transitions. [2023-11-06 22:25:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:25:40,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 97 [2023-11-06 22:25:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:40,151 INFO L225 Difference]: With dead ends: 945 [2023-11-06 22:25:40,151 INFO L226 Difference]: Without dead ends: 521 [2023-11-06 22:25:40,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:25:40,154 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:40,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 477 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:25:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-11-06 22:25:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 487. [2023-11-06 22:25:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 378 states have (on average 1.17989417989418) internal successors, (446), 380 states have internal predecessors, (446), 67 states have call successors, (67), 27 states have call predecessors, (67), 34 states have return successors, (119), 79 states have call predecessors, (119), 67 states have call successors, (119) [2023-11-06 22:25:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 632 transitions. [2023-11-06 22:25:40,190 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 632 transitions. Word has length 97 [2023-11-06 22:25:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:40,191 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 632 transitions. [2023-11-06 22:25:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:25:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 632 transitions. [2023-11-06 22:25:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:25:40,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:40,193 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:40,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:40,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-06 22:25:40,398 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:40,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1099049156, now seen corresponding path program 1 times [2023-11-06 22:25:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086706721] [2023-11-06 22:25:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:40,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:40,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782829183] [2023-11-06 22:25:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:40,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:40,412 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:40,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:25:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:40,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:25:40,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-06 22:25:40,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-06 22:25:40,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:40,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086706721] [2023-11-06 22:25:40,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782829183] [2023-11-06 22:25:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782829183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:40,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:25:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944447778] [2023-11-06 22:25:40,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:25:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:25:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:40,763 INFO L87 Difference]: Start difference. First operand 487 states and 632 transitions. Second operand has 16 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:25:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:41,127 INFO L93 Difference]: Finished difference Result 660 states and 854 transitions. [2023-11-06 22:25:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:25:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 108 [2023-11-06 22:25:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:41,132 INFO L225 Difference]: With dead ends: 660 [2023-11-06 22:25:41,133 INFO L226 Difference]: Without dead ends: 657 [2023-11-06 22:25:41,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:25:41,134 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 143 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:41,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 445 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:25:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-06 22:25:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 636. [2023-11-06 22:25:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 496 states have (on average 1.189516129032258) internal successors, (590), 498 states have internal predecessors, (590), 90 states have call successors, (90), 33 states have call predecessors, (90), 42 states have return successors, (158), 104 states have call predecessors, (158), 90 states have call successors, (158) [2023-11-06 22:25:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 838 transitions. [2023-11-06 22:25:41,181 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 838 transitions. Word has length 108 [2023-11-06 22:25:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:41,182 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 838 transitions. [2023-11-06 22:25:41,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:25:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 838 transitions. [2023-11-06 22:25:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 22:25:41,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:41,184 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:41,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:41,390 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:41,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash -459868787, now seen corresponding path program 2 times [2023-11-06 22:25:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199877986] [2023-11-06 22:25:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:41,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262584953] [2023-11-06 22:25:41,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:41,402 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:41,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 22:25:41,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:41,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:41,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:25:41,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-06 22:25:41,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:41,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:41,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199877986] [2023-11-06 22:25:41,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262584953] [2023-11-06 22:25:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262584953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:25:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956125100] [2023-11-06 22:25:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:41,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:25:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:25:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:25:41,568 INFO L87 Difference]: Start difference. First operand 636 states and 838 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:25:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:41,649 INFO L93 Difference]: Finished difference Result 1015 states and 1346 transitions. [2023-11-06 22:25:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 114 [2023-11-06 22:25:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:41,654 INFO L225 Difference]: With dead ends: 1015 [2023-11-06 22:25:41,654 INFO L226 Difference]: Without dead ends: 554 [2023-11-06 22:25:41,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:25:41,661 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:41,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 176 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:25:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-06 22:25:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 553. [2023-11-06 22:25:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.1689814814814814) internal successors, (505), 434 states have internal predecessors, (505), 75 states have call successors, (75), 30 states have call predecessors, (75), 38 states have return successors, (129), 88 states have call predecessors, (129), 75 states have call successors, (129) [2023-11-06 22:25:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 709 transitions. [2023-11-06 22:25:41,700 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 709 transitions. Word has length 114 [2023-11-06 22:25:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:41,700 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 709 transitions. [2023-11-06 22:25:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:25:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 709 transitions. [2023-11-06 22:25:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 22:25:41,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:41,703 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:41,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 22:25:41,908 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:41,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -873188839, now seen corresponding path program 1 times [2023-11-06 22:25:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476578360] [2023-11-06 22:25:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:41,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497469939] [2023-11-06 22:25:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:41,920 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:41,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 22:25:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:42,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:25:42,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-06 22:25:42,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-06 22:25:42,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476578360] [2023-11-06 22:25:42,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497469939] [2023-11-06 22:25:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497469939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:42,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-06 22:25:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364348098] [2023-11-06 22:25:42,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:25:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:25:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:25:42,995 INFO L87 Difference]: Start difference. First operand 553 states and 709 transitions. Second operand has 20 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:25:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:44,993 INFO L93 Difference]: Finished difference Result 977 states and 1263 transitions. [2023-11-06 22:25:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:25:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 116 [2023-11-06 22:25:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:44,998 INFO L225 Difference]: With dead ends: 977 [2023-11-06 22:25:44,998 INFO L226 Difference]: Without dead ends: 570 [2023-11-06 22:25:45,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:25:45,001 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 138 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:45,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 846 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:25:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-06 22:25:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2023-11-06 22:25:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 436 states have (on average 1.158256880733945) internal successors, (505), 438 states have internal predecessors, (505), 72 states have call successors, (72), 31 states have call predecessors, (72), 40 states have return successors, (122), 86 states have call predecessors, (122), 72 states have call successors, (122) [2023-11-06 22:25:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 699 transitions. [2023-11-06 22:25:45,041 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 699 transitions. Word has length 116 [2023-11-06 22:25:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:45,042 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 699 transitions. [2023-11-06 22:25:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:25:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 699 transitions. [2023-11-06 22:25:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:25:45,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:45,044 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:45,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:45,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-06 22:25:45,249 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:45,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1448975435, now seen corresponding path program 1 times [2023-11-06 22:25:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:45,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085047601] [2023-11-06 22:25:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:45,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:45,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:45,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577167445] [2023-11-06 22:25:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:45,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:45,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:45,262 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 22:25:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:45,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:25:45,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-06 22:25:45,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-06 22:25:46,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085047601] [2023-11-06 22:25:46,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577167445] [2023-11-06 22:25:46,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577167445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:46,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2023-11-06 22:25:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671888565] [2023-11-06 22:25:46,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:25:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:25:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:25:46,983 INFO L87 Difference]: Start difference. First operand 556 states and 699 transitions. Second operand has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 22:25:51,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-06 22:25:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:52,751 INFO L93 Difference]: Finished difference Result 1392 states and 1850 transitions. [2023-11-06 22:25:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:25:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 120 [2023-11-06 22:25:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:52,759 INFO L225 Difference]: With dead ends: 1392 [2023-11-06 22:25:52,759 INFO L226 Difference]: Without dead ends: 1009 [2023-11-06 22:25:52,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=324, Invalid=2538, Unknown=0, NotChecked=0, Total=2862 [2023-11-06 22:25:52,763 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 194 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:52,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1233 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:25:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-06 22:25:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 855. [2023-11-06 22:25:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 673 states have (on average 1.200594353640416) internal successors, (808), 673 states have internal predecessors, (808), 122 states have call successors, (122), 42 states have call predecessors, (122), 52 states have return successors, (205), 139 states have call predecessors, (205), 122 states have call successors, (205) [2023-11-06 22:25:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1135 transitions. [2023-11-06 22:25:52,843 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1135 transitions. Word has length 120 [2023-11-06 22:25:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:52,844 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1135 transitions. [2023-11-06 22:25:52,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 22:25:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1135 transitions. [2023-11-06 22:25:52,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-06 22:25:52,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:52,846 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:52,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 22:25:53,052 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:53,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1982808589, now seen corresponding path program 2 times [2023-11-06 22:25:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154809857] [2023-11-06 22:25:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:53,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876205817] [2023-11-06 22:25:53,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:53,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:53,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:53,065 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:53,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:25:53,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:53,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:53,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:53,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 119 proven. 27 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-06 22:25:53,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 119 proven. 28 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-06 22:25:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154809857] [2023-11-06 22:25:53,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876205817] [2023-11-06 22:25:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876205817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:53,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:53,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 16 [2023-11-06 22:25:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316935614] [2023-11-06 22:25:53,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:25:53,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:25:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:53,567 INFO L87 Difference]: Start difference. First operand 855 states and 1135 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-06 22:25:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:54,116 INFO L93 Difference]: Finished difference Result 1686 states and 2272 transitions. [2023-11-06 22:25:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:25:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 130 [2023-11-06 22:25:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:54,123 INFO L225 Difference]: With dead ends: 1686 [2023-11-06 22:25:54,124 INFO L226 Difference]: Without dead ends: 924 [2023-11-06 22:25:54,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 236 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:25:54,129 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 76 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:54,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 460 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:25:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-11-06 22:25:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 861. [2023-11-06 22:25:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 676 states have (on average 1.198224852071006) internal successors, (810), 679 states have internal predecessors, (810), 123 states have call successors, (123), 43 states have call predecessors, (123), 54 states have return successors, (204), 138 states have call predecessors, (204), 123 states have call successors, (204) [2023-11-06 22:25:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1137 transitions. [2023-11-06 22:25:54,231 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1137 transitions. Word has length 130 [2023-11-06 22:25:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:54,232 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1137 transitions. [2023-11-06 22:25:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-06 22:25:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1137 transitions. [2023-11-06 22:25:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:25:54,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:54,234 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:54,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-06 22:25:54,440 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:54,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 46209849, now seen corresponding path program 1 times [2023-11-06 22:25:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518933496] [2023-11-06 22:25:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:54,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661630286] [2023-11-06 22:25:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:54,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:54,450 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:54,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 22:25:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:54,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:25:54,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-06 22:25:54,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-06 22:25:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518933496] [2023-11-06 22:25:54,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661630286] [2023-11-06 22:25:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661630286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:54,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-06 22:25:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943353431] [2023-11-06 22:25:54,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:25:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:25:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:25:54,787 INFO L87 Difference]: Start difference. First operand 861 states and 1137 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-06 22:25:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:55,081 INFO L93 Difference]: Finished difference Result 868 states and 1137 transitions. [2023-11-06 22:25:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:25:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 127 [2023-11-06 22:25:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:55,087 INFO L225 Difference]: With dead ends: 868 [2023-11-06 22:25:55,087 INFO L226 Difference]: Without dead ends: 867 [2023-11-06 22:25:55,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:25:55,089 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 121 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:55,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 449 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:25:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-06 22:25:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 861. [2023-11-06 22:25:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 676 states have (on average 1.1937869822485208) internal successors, (807), 679 states have internal predecessors, (807), 123 states have call successors, (123), 43 states have call predecessors, (123), 54 states have return successors, (204), 138 states have call predecessors, (204), 123 states have call successors, (204) [2023-11-06 22:25:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1134 transitions. [2023-11-06 22:25:55,173 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1134 transitions. Word has length 127 [2023-11-06 22:25:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:55,173 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1134 transitions. [2023-11-06 22:25:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-06 22:25:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1134 transitions. [2023-11-06 22:25:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:25:55,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:55,175 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:55,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:55,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-06 22:25:55,381 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:55,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:55,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2130716674, now seen corresponding path program 2 times [2023-11-06 22:25:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866109294] [2023-11-06 22:25:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:55,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618805742] [2023-11-06 22:25:55,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:55,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:55,398 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:55,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 22:25:55,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:55,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:55,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:25:55,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 146 proven. 7 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-06 22:25:55,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-06 22:25:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866109294] [2023-11-06 22:25:55,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618805742] [2023-11-06 22:25:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618805742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:55,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:55,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-11-06 22:25:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361654880] [2023-11-06 22:25:55,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:25:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:55,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:25:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:25:55,728 INFO L87 Difference]: Start difference. First operand 861 states and 1134 transitions. Second operand has 11 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:25:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:55,965 INFO L93 Difference]: Finished difference Result 1502 states and 2017 transitions. [2023-11-06 22:25:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:25:55,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 131 [2023-11-06 22:25:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:55,971 INFO L225 Difference]: With dead ends: 1502 [2023-11-06 22:25:55,972 INFO L226 Difference]: Without dead ends: 855 [2023-11-06 22:25:55,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 244 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:55,976 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 66 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:55,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 384 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:25:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-06 22:25:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 850. [2023-11-06 22:25:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 667 states have (on average 1.1934032983508245) internal successors, (796), 670 states have internal predecessors, (796), 122 states have call successors, (122), 43 states have call predecessors, (122), 53 states have return successors, (201), 136 states have call predecessors, (201), 122 states have call successors, (201) [2023-11-06 22:25:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1119 transitions. [2023-11-06 22:25:56,075 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1119 transitions. Word has length 131 [2023-11-06 22:25:56,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:56,075 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1119 transitions. [2023-11-06 22:25:56,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:25:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1119 transitions. [2023-11-06 22:25:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-06 22:25:56,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:56,078 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:56,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-06 22:25:56,283 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:56,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1979710907, now seen corresponding path program 3 times [2023-11-06 22:25:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094465972] [2023-11-06 22:25:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:56,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:56,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824759623] [2023-11-06 22:25:56,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:25:56,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:56,293 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:56,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 22:25:56,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:25:56,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:56,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:25:56,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-06 22:25:56,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:56,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:56,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094465972] [2023-11-06 22:25:56,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824759623] [2023-11-06 22:25:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824759623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098097968] [2023-11-06 22:25:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:25:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:25:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:25:56,399 INFO L87 Difference]: Start difference. First operand 850 states and 1119 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:25:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:56,573 INFO L93 Difference]: Finished difference Result 872 states and 1143 transitions. [2023-11-06 22:25:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:25:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 134 [2023-11-06 22:25:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:56,580 INFO L225 Difference]: With dead ends: 872 [2023-11-06 22:25:56,580 INFO L226 Difference]: Without dead ends: 871 [2023-11-06 22:25:56,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:25:56,582 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:56,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 212 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:25:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-11-06 22:25:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 859. [2023-11-06 22:25:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 676 states have (on average 1.1893491124260356) internal successors, (804), 676 states have internal predecessors, (804), 122 states have call successors, (122), 43 states have call predecessors, (122), 53 states have return successors, (201), 139 states have call predecessors, (201), 122 states have call successors, (201) [2023-11-06 22:25:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1127 transitions. [2023-11-06 22:25:56,657 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1127 transitions. Word has length 134 [2023-11-06 22:25:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:56,659 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1127 transitions. [2023-11-06 22:25:56,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:25:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1127 transitions. [2023-11-06 22:25:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-06 22:25:56,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:56,662 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:56,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-06 22:25:56,868 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:56,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1842147412, now seen corresponding path program 1 times [2023-11-06 22:25:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:56,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733219065] [2023-11-06 22:25:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:56,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:56,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:56,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027080802] [2023-11-06 22:25:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:56,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:56,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:56,881 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 22:25:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:56,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:25:56,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-06 22:25:57,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:57,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733219065] [2023-11-06 22:25:57,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027080802] [2023-11-06 22:25:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027080802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:57,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:57,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:25:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000140043] [2023-11-06 22:25:57,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:57,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:25:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:25:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:25:57,124 INFO L87 Difference]: Start difference. First operand 859 states and 1127 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 22:25:57,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:57,417 INFO L93 Difference]: Finished difference Result 1488 states and 1985 transitions. [2023-11-06 22:25:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:25:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2023-11-06 22:25:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:57,425 INFO L225 Difference]: With dead ends: 1488 [2023-11-06 22:25:57,426 INFO L226 Difference]: Without dead ends: 852 [2023-11-06 22:25:57,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:25:57,429 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:57,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 405 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:25:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-06 22:25:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 848. [2023-11-06 22:25:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 667 states have (on average 1.191904047976012) internal successors, (795), 668 states have internal predecessors, (795), 120 states have call successors, (120), 43 states have call predecessors, (120), 53 states have return successors, (194), 136 states have call predecessors, (194), 120 states have call successors, (194) [2023-11-06 22:25:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1109 transitions. [2023-11-06 22:25:57,505 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1109 transitions. Word has length 137 [2023-11-06 22:25:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:57,505 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1109 transitions. [2023-11-06 22:25:57,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 22:25:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1109 transitions. [2023-11-06 22:25:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-06 22:25:57,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:57,507 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:57,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-06 22:25:57,712 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:57,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1011311176, now seen corresponding path program 1 times [2023-11-06 22:25:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55882700] [2023-11-06 22:25:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:57,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:57,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061730338] [2023-11-06 22:25:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:57,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:57,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:57,725 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:57,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 22:25:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:57,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:25:57,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-06 22:25:57,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 96 proven. 27 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 22:25:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:58,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55882700] [2023-11-06 22:25:58,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061730338] [2023-11-06 22:25:58,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061730338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:58,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:58,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2023-11-06 22:25:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173868557] [2023-11-06 22:25:58,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:58,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:25:58,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:58,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:25:58,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:25:58,211 INFO L87 Difference]: Start difference. First operand 848 states and 1109 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:25:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:58,593 INFO L93 Difference]: Finished difference Result 1593 states and 2122 transitions. [2023-11-06 22:25:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:25:58,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 141 [2023-11-06 22:25:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:58,603 INFO L225 Difference]: With dead ends: 1593 [2023-11-06 22:25:58,603 INFO L226 Difference]: Without dead ends: 813 [2023-11-06 22:25:58,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:25:58,607 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 58 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:58,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 553 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:25:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-11-06 22:25:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 796. [2023-11-06 22:25:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 624 states have (on average 1.1923076923076923) internal successors, (744), 630 states have internal predecessors, (744), 112 states have call successors, (112), 43 states have call predecessors, (112), 52 states have return successors, (166), 122 states have call predecessors, (166), 112 states have call successors, (166) [2023-11-06 22:25:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1022 transitions. [2023-11-06 22:25:58,679 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1022 transitions. Word has length 141 [2023-11-06 22:25:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:58,679 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1022 transitions. [2023-11-06 22:25:58,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:25:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1022 transitions. [2023-11-06 22:25:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-06 22:25:58,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:58,681 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:58,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:58,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-06 22:25:58,886 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:58,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1926055556, now seen corresponding path program 2 times [2023-11-06 22:25:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732899371] [2023-11-06 22:25:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:58,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087539108] [2023-11-06 22:25:58,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:58,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:58,900 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:58,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-06 22:25:59,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:59,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:59,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:59,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-06 22:25:59,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:59,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732899371] [2023-11-06 22:25:59,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:25:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087539108] [2023-11-06 22:25:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087539108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:59,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:59,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:25:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506637663] [2023-11-06 22:25:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:59,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:25:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:25:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:25:59,293 INFO L87 Difference]: Start difference. First operand 796 states and 1022 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:25:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:59,413 INFO L93 Difference]: Finished difference Result 796 states and 1022 transitions. [2023-11-06 22:25:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:25:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 147 [2023-11-06 22:25:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:59,419 INFO L225 Difference]: With dead ends: 796 [2023-11-06 22:25:59,420 INFO L226 Difference]: Without dead ends: 795 [2023-11-06 22:25:59,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:25:59,421 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:59,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:25:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-06 22:25:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 784. [2023-11-06 22:25:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 615 states have (on average 1.170731707317073) internal successors, (720), 621 states have internal predecessors, (720), 110 states have call successors, (110), 43 states have call predecessors, (110), 52 states have return successors, (161), 119 states have call predecessors, (161), 110 states have call successors, (161) [2023-11-06 22:25:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 991 transitions. [2023-11-06 22:25:59,495 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 991 transitions. Word has length 147 [2023-11-06 22:25:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:59,496 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 991 transitions. [2023-11-06 22:25:59,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:25:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 991 transitions. [2023-11-06 22:25:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-06 22:25:59,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:59,498 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 9, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:59,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:59,704 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:25:59,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1209576437, now seen corresponding path program 4 times [2023-11-06 22:25:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706153783] [2023-11-06 22:25:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:59,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:25:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216804458] [2023-11-06 22:25:59,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:25:59,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:59,717 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:59,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-06 22:25:59,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:25:59,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:59,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:25:59,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 113 proven. 6 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-11-06 22:25:59,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 113 proven. 6 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-11-06 22:26:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706153783] [2023-11-06 22:26:01,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216804458] [2023-11-06 22:26:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216804458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:01,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:26:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855307231] [2023-11-06 22:26:01,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:01,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:01,440 INFO L87 Difference]: Start difference. First operand 784 states and 991 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:26:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:02,822 INFO L93 Difference]: Finished difference Result 884 states and 1160 transitions. [2023-11-06 22:26:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:26:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 154 [2023-11-06 22:26:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:02,829 INFO L225 Difference]: With dead ends: 884 [2023-11-06 22:26:02,829 INFO L226 Difference]: Without dead ends: 883 [2023-11-06 22:26:02,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:26:02,831 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:02,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 361 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:26:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-06 22:26:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 646. [2023-11-06 22:26:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 506 states have (on average 1.1324110671936758) internal successors, (573), 510 states have internal predecessors, (573), 82 states have call successors, (82), 37 states have call predecessors, (82), 51 states have return successors, (139), 98 states have call predecessors, (139), 82 states have call successors, (139) [2023-11-06 22:26:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 794 transitions. [2023-11-06 22:26:02,916 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 794 transitions. Word has length 154 [2023-11-06 22:26:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:02,917 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 794 transitions. [2023-11-06 22:26:02,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:26:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 794 transitions. [2023-11-06 22:26:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:26:02,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:02,919 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:02,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-06 22:26:03,125 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:03,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1407147507, now seen corresponding path program 1 times [2023-11-06 22:26:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027139368] [2023-11-06 22:26:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:03,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088250571] [2023-11-06 22:26:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:03,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:03,142 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:03,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-06 22:26:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:03,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:26:03,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-06 22:26:03,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-06 22:26:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:03,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027139368] [2023-11-06 22:26:03,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:03,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088250571] [2023-11-06 22:26:03,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088250571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:03,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:03,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2023-11-06 22:26:03,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104830352] [2023-11-06 22:26:03,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:26:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:26:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:26:03,956 INFO L87 Difference]: Start difference. First operand 646 states and 794 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-06 22:26:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:04,389 INFO L93 Difference]: Finished difference Result 1274 states and 1578 transitions. [2023-11-06 22:26:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:26:04,389 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 157 [2023-11-06 22:26:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:04,394 INFO L225 Difference]: With dead ends: 1274 [2023-11-06 22:26:04,395 INFO L226 Difference]: Without dead ends: 708 [2023-11-06 22:26:04,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 290 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:26:04,398 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 85 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:04,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 270 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-11-06 22:26:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 649. [2023-11-06 22:26:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 509 states have (on average 1.1237721021611002) internal successors, (572), 512 states have internal predecessors, (572), 82 states have call successors, (82), 37 states have call predecessors, (82), 51 states have return successors, (134), 99 states have call predecessors, (134), 82 states have call successors, (134) [2023-11-06 22:26:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 788 transitions. [2023-11-06 22:26:04,457 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 788 transitions. Word has length 157 [2023-11-06 22:26:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:04,458 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 788 transitions. [2023-11-06 22:26:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-06 22:26:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 788 transitions. [2023-11-06 22:26:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:26:04,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:04,460 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 9, 9, 9, 9, 9, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:04,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:04,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:04,667 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:04,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 587809359, now seen corresponding path program 3 times [2023-11-06 22:26:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501196286] [2023-11-06 22:26:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:04,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645834865] [2023-11-06 22:26:04,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:04,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:04,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:04,680 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:04,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-06 22:26:04,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:26:04,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:04,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:26:04,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 237 proven. 39 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-11-06 22:26:05,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501196286] [2023-11-06 22:26:06,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645834865] [2023-11-06 22:26:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645834865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:06,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:06,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-06 22:26:06,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082411865] [2023-11-06 22:26:06,232 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:06,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:26:06,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:26:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:06,233 INFO L87 Difference]: Start difference. First operand 649 states and 788 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:06,793 INFO L93 Difference]: Finished difference Result 735 states and 931 transitions. [2023-11-06 22:26:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:26:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 180 [2023-11-06 22:26:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:06,798 INFO L225 Difference]: With dead ends: 735 [2023-11-06 22:26:06,799 INFO L226 Difference]: Without dead ends: 734 [2023-11-06 22:26:06,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:26:06,800 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 19 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 288 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-11-06 22:26:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 664. [2023-11-06 22:26:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 521 states have (on average 1.1209213051823417) internal successors, (584), 524 states have internal predecessors, (584), 82 states have call successors, (82), 37 states have call predecessors, (82), 54 states have return successors, (143), 102 states have call predecessors, (143), 82 states have call successors, (143) [2023-11-06 22:26:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 809 transitions. [2023-11-06 22:26:06,873 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 809 transitions. Word has length 180 [2023-11-06 22:26:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:06,873 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 809 transitions. [2023-11-06 22:26:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 809 transitions. [2023-11-06 22:26:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:26:06,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:06,876 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:06,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:07,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-06 22:26:07,082 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:07,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1985081947, now seen corresponding path program 2 times [2023-11-06 22:26:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447115004] [2023-11-06 22:26:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:07,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:07,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429075191] [2023-11-06 22:26:07,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:07,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:07,094 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:07,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-06 22:26:07,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:07,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:07,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:07,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-11-06 22:26:07,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-11-06 22:26:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:07,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447115004] [2023-11-06 22:26:07,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429075191] [2023-11-06 22:26:07,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429075191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:07,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:07,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-06 22:26:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650958966] [2023-11-06 22:26:07,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:26:07,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:26:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:26:07,428 INFO L87 Difference]: Start difference. First operand 664 states and 809 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-06 22:26:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:07,636 INFO L93 Difference]: Finished difference Result 815 states and 1020 transitions. [2023-11-06 22:26:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:26:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 167 [2023-11-06 22:26:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:07,641 INFO L225 Difference]: With dead ends: 815 [2023-11-06 22:26:07,641 INFO L226 Difference]: Without dead ends: 814 [2023-11-06 22:26:07,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:26:07,643 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 37 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:07,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 244 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-11-06 22:26:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 797. [2023-11-06 22:26:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 631 states have (on average 1.1283676703645007) internal successors, (712), 637 states have internal predecessors, (712), 105 states have call successors, (105), 37 states have call predecessors, (105), 54 states have return successors, (166), 122 states have call predecessors, (166), 105 states have call successors, (166) [2023-11-06 22:26:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 983 transitions. [2023-11-06 22:26:07,723 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 983 transitions. Word has length 167 [2023-11-06 22:26:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:07,724 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 983 transitions. [2023-11-06 22:26:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-06 22:26:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 983 transitions. [2023-11-06 22:26:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:26:07,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:07,726 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 8, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:07,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:07,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:07,932 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:07,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash 23795079, now seen corresponding path program 4 times [2023-11-06 22:26:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860223820] [2023-11-06 22:26:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:07,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:07,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:07,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296980202] [2023-11-06 22:26:07,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:07,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:07,945 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:07,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-06 22:26:08,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:26:08,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:08,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:26:08,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 185 proven. 102 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-11-06 22:26:08,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 185 proven. 103 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-06 22:26:08,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860223820] [2023-11-06 22:26:08,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296980202] [2023-11-06 22:26:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296980202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:08,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 16 [2023-11-06 22:26:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434616740] [2023-11-06 22:26:08,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:08,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:08,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:08,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:08,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:08,494 INFO L87 Difference]: Start difference. First operand 797 states and 983 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 states have internal predecessors, (83), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-06 22:26:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:08,951 INFO L93 Difference]: Finished difference Result 1484 states and 1892 transitions. [2023-11-06 22:26:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:26:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 states have internal predecessors, (83), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) Word has length 180 [2023-11-06 22:26:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:08,958 INFO L225 Difference]: With dead ends: 1484 [2023-11-06 22:26:08,958 INFO L226 Difference]: Without dead ends: 893 [2023-11-06 22:26:08,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 338 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:26:08,963 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:08,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 428 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-11-06 22:26:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 815. [2023-11-06 22:26:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 645 states have (on average 1.1271317829457363) internal successors, (727), 650 states have internal predecessors, (727), 108 states have call successors, (108), 39 states have call predecessors, (108), 55 states have return successors, (170), 125 states have call predecessors, (170), 108 states have call successors, (170) [2023-11-06 22:26:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1005 transitions. [2023-11-06 22:26:09,052 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1005 transitions. Word has length 180 [2023-11-06 22:26:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:09,053 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1005 transitions. [2023-11-06 22:26:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 states have internal predecessors, (83), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-06 22:26:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1005 transitions. [2023-11-06 22:26:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:26:09,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:09,056 INFO L195 NwaCegarLoop]: trace histogram [20, 17, 11, 11, 11, 11, 9, 9, 9, 9, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:09,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:09,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:09,262 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:09,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash -92880701, now seen corresponding path program 5 times [2023-11-06 22:26:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:09,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619942383] [2023-11-06 22:26:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:09,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:09,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654447524] [2023-11-06 22:26:09,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:26:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:09,275 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:09,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-06 22:26:09,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-06 22:26:09,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:09,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:26:09,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 426 proven. 217 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-11-06 22:26:09,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 426 proven. 238 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-11-06 22:26:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619942383] [2023-11-06 22:26:10,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:10,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654447524] [2023-11-06 22:26:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654447524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:10,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:10,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 35 [2023-11-06 22:26:10,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19549569] [2023-11-06 22:26:10,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:10,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:26:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:26:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:26:10,964 INFO L87 Difference]: Start difference. First operand 815 states and 1005 transitions. Second operand has 35 states, 33 states have (on average 4.2727272727272725) internal successors, (141), 30 states have internal predecessors, (141), 21 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 17 states have call successors, (25) [2023-11-06 22:26:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:12,365 INFO L93 Difference]: Finished difference Result 1810 states and 2386 transitions. [2023-11-06 22:26:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:26:12,366 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.2727272727272725) internal successors, (141), 30 states have internal predecessors, (141), 21 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 17 states have call successors, (25) Word has length 194 [2023-11-06 22:26:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:12,372 INFO L225 Difference]: With dead ends: 1810 [2023-11-06 22:26:12,372 INFO L226 Difference]: Without dead ends: 1101 [2023-11-06 22:26:12,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 350 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 22:26:12,376 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 342 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:12,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 980 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:26:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-11-06 22:26:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 884. [2023-11-06 22:26:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 698 states have (on average 1.1260744985673352) internal successors, (786), 704 states have internal predecessors, (786), 117 states have call successors, (117), 44 states have call predecessors, (117), 62 states have return successors, (201), 135 states have call predecessors, (201), 117 states have call successors, (201) [2023-11-06 22:26:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1104 transitions. [2023-11-06 22:26:12,470 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1104 transitions. Word has length 194 [2023-11-06 22:26:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:12,471 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1104 transitions. [2023-11-06 22:26:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.2727272727272725) internal successors, (141), 30 states have internal predecessors, (141), 21 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 17 states have call successors, (25) [2023-11-06 22:26:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1104 transitions. [2023-11-06 22:26:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-06 22:26:12,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:12,473 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:12,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:12,680 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:12,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1466112171, now seen corresponding path program 3 times [2023-11-06 22:26:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679202069] [2023-11-06 22:26:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:12,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275824457] [2023-11-06 22:26:12,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:12,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:12,692 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:12,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-06 22:26:12,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:26:12,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:12,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:12,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-11-06 22:26:12,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-11-06 22:26:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679202069] [2023-11-06 22:26:13,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275824457] [2023-11-06 22:26:13,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275824457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:13,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:13,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:26:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389807798] [2023-11-06 22:26:13,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:13,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:13,023 INFO L87 Difference]: Start difference. First operand 884 states and 1104 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:26:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:13,448 INFO L93 Difference]: Finished difference Result 998 states and 1251 transitions. [2023-11-06 22:26:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:26:13,449 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 178 [2023-11-06 22:26:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:13,455 INFO L225 Difference]: With dead ends: 998 [2023-11-06 22:26:13,455 INFO L226 Difference]: Without dead ends: 997 [2023-11-06 22:26:13,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:13,457 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 114 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:13,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 464 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-06 22:26:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 988. [2023-11-06 22:26:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 780 states have (on average 1.1282051282051282) internal successors, (880), 784 states have internal predecessors, (880), 128 states have call successors, (128), 49 states have call predecessors, (128), 73 states have return successors, (237), 154 states have call predecessors, (237), 128 states have call successors, (237) [2023-11-06 22:26:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1245 transitions. [2023-11-06 22:26:13,559 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1245 transitions. Word has length 178 [2023-11-06 22:26:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:13,559 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1245 transitions. [2023-11-06 22:26:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:26:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1245 transitions. [2023-11-06 22:26:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-06 22:26:13,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:13,563 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:13,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:13,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:13,769 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:13,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1442720629, now seen corresponding path program 2 times [2023-11-06 22:26:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:13,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978930880] [2023-11-06 22:26:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:13,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695508296] [2023-11-06 22:26:13,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:13,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:13,787 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:13,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-06 22:26:13,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:13,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:13,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:26:13,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-11-06 22:26:14,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-11-06 22:26:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978930880] [2023-11-06 22:26:14,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695508296] [2023-11-06 22:26:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695508296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:14,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:14,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-06 22:26:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726512671] [2023-11-06 22:26:14,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:14,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:26:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:26:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:14,285 INFO L87 Difference]: Start difference. First operand 988 states and 1245 transitions. Second operand has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:26:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:14,699 INFO L93 Difference]: Finished difference Result 993 states and 1245 transitions. [2023-11-06 22:26:14,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:26:14,700 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 181 [2023-11-06 22:26:14,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:14,706 INFO L225 Difference]: With dead ends: 993 [2023-11-06 22:26:14,706 INFO L226 Difference]: Without dead ends: 992 [2023-11-06 22:26:14,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:26:14,708 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 124 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:14,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 564 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-11-06 22:26:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 988. [2023-11-06 22:26:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 780 states have (on average 1.117948717948718) internal successors, (872), 784 states have internal predecessors, (872), 128 states have call successors, (128), 49 states have call predecessors, (128), 73 states have return successors, (237), 154 states have call predecessors, (237), 128 states have call successors, (237) [2023-11-06 22:26:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1237 transitions. [2023-11-06 22:26:14,823 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1237 transitions. Word has length 181 [2023-11-06 22:26:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:14,823 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1237 transitions. [2023-11-06 22:26:14,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:26:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1237 transitions. [2023-11-06 22:26:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-06 22:26:14,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:14,826 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:14,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-06 22:26:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:15,032 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:15,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 755389779, now seen corresponding path program 4 times [2023-11-06 22:26:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780250313] [2023-11-06 22:26:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:15,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:15,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085272360] [2023-11-06 22:26:15,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:15,044 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-06 22:26:15,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:26:15,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:15,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:26:15,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 222 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2023-11-06 22:26:15,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 222 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-06 22:26:15,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780250313] [2023-11-06 22:26:15,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085272360] [2023-11-06 22:26:15,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085272360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:15,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:15,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2023-11-06 22:26:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109939755] [2023-11-06 22:26:15,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:15,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:26:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:26:15,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:26:15,670 INFO L87 Difference]: Start difference. First operand 988 states and 1237 transitions. Second operand has 17 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:26:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:16,193 INFO L93 Difference]: Finished difference Result 1550 states and 1936 transitions. [2023-11-06 22:26:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:26:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 178 [2023-11-06 22:26:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:16,200 INFO L225 Difference]: With dead ends: 1550 [2023-11-06 22:26:16,200 INFO L226 Difference]: Without dead ends: 932 [2023-11-06 22:26:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 335 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:16,203 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 102 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:16,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 703 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-11-06 22:26:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 914. [2023-11-06 22:26:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 723 states have (on average 1.1106500691562933) internal successors, (803), 727 states have internal predecessors, (803), 115 states have call successors, (115), 45 states have call predecessors, (115), 69 states have return successors, (218), 141 states have call predecessors, (218), 115 states have call successors, (218) [2023-11-06 22:26:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1136 transitions. [2023-11-06 22:26:16,292 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1136 transitions. Word has length 178 [2023-11-06 22:26:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:16,292 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1136 transitions. [2023-11-06 22:26:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:26:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1136 transitions. [2023-11-06 22:26:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-06 22:26:16,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:16,295 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:16,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-06 22:26:16,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:16,500 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:16,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1151483724, now seen corresponding path program 1 times [2023-11-06 22:26:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:16,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112177445] [2023-11-06 22:26:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:16,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755322978] [2023-11-06 22:26:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:16,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:16,511 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:16,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-06 22:26:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:16,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:26:16,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2023-11-06 22:26:16,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:16,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112177445] [2023-11-06 22:26:16,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755322978] [2023-11-06 22:26:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755322978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:16,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:16,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:26:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458447812] [2023-11-06 22:26:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:16,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:16,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:16,675 INFO L87 Difference]: Start difference. First operand 914 states and 1136 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:26:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:16,787 INFO L93 Difference]: Finished difference Result 966 states and 1193 transitions. [2023-11-06 22:26:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 199 [2023-11-06 22:26:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:16,809 INFO L225 Difference]: With dead ends: 966 [2023-11-06 22:26:16,809 INFO L226 Difference]: Without dead ends: 962 [2023-11-06 22:26:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:16,811 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:16,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-11-06 22:26:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 914. [2023-11-06 22:26:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 723 states have (on average 1.1106500691562933) internal successors, (803), 727 states have internal predecessors, (803), 115 states have call successors, (115), 45 states have call predecessors, (115), 69 states have return successors, (217), 141 states have call predecessors, (217), 115 states have call successors, (217) [2023-11-06 22:26:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1135 transitions. [2023-11-06 22:26:16,891 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1135 transitions. Word has length 199 [2023-11-06 22:26:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:16,892 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1135 transitions. [2023-11-06 22:26:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:26:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1135 transitions. [2023-11-06 22:26:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-06 22:26:16,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:16,895 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:16,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-06 22:26:17,101 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:17,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -933219852, now seen corresponding path program 2 times [2023-11-06 22:26:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115838507] [2023-11-06 22:26:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:17,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:17,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016107513] [2023-11-06 22:26:17,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:17,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:17,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:17,112 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:17,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-06 22:26:17,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:17,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:17,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:26:17,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-06 22:26:17,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-06 22:26:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115838507] [2023-11-06 22:26:17,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016107513] [2023-11-06 22:26:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016107513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:17,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-11-06 22:26:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341241770] [2023-11-06 22:26:17,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:17,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:26:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:26:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:17,680 INFO L87 Difference]: Start difference. First operand 914 states and 1135 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:26:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:18,307 INFO L93 Difference]: Finished difference Result 1536 states and 1915 transitions. [2023-11-06 22:26:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:26:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 209 [2023-11-06 22:26:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:18,311 INFO L225 Difference]: With dead ends: 1536 [2023-11-06 22:26:18,311 INFO L226 Difference]: Without dead ends: 919 [2023-11-06 22:26:18,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 397 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:26:18,315 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 93 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 455 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-11-06 22:26:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 908. [2023-11-06 22:26:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 717 states have (on average 1.1115760111576012) internal successors, (797), 723 states have internal predecessors, (797), 113 states have call successors, (113), 47 states have call predecessors, (113), 71 states have return successors, (207), 137 states have call predecessors, (207), 113 states have call successors, (207) [2023-11-06 22:26:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1117 transitions. [2023-11-06 22:26:18,413 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1117 transitions. Word has length 209 [2023-11-06 22:26:18,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:18,414 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1117 transitions. [2023-11-06 22:26:18,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:26:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1117 transitions. [2023-11-06 22:26:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-06 22:26:18,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:18,417 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 10, 10, 10, 10, 10, 10, 10, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:18,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:18,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-06 22:26:18,623 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:18,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2024975658, now seen corresponding path program 5 times [2023-11-06 22:26:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:18,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543080349] [2023-11-06 22:26:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:18,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076089568] [2023-11-06 22:26:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:26:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:18,635 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:18,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-06 22:26:18,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-06 22:26:18,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:18,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:26:18,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 441 proven. 38 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2023-11-06 22:26:18,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 441 proven. 53 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-06 22:26:19,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543080349] [2023-11-06 22:26:19,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076089568] [2023-11-06 22:26:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076089568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:19,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:19,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 25 [2023-11-06 22:26:19,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920420188] [2023-11-06 22:26:19,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:19,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:26:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:26:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:26:19,715 INFO L87 Difference]: Start difference. First operand 908 states and 1117 transitions. Second operand has 25 states, 25 states have (on average 4.32) internal successors, (108), 21 states have internal predecessors, (108), 14 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 10 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-06 22:26:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:20,868 INFO L93 Difference]: Finished difference Result 1672 states and 2097 transitions. [2023-11-06 22:26:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:26:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 21 states have internal predecessors, (108), 14 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 10 states have call predecessors, (19), 12 states have call successors, (19) Word has length 226 [2023-11-06 22:26:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:20,872 INFO L225 Difference]: With dead ends: 1672 [2023-11-06 22:26:20,872 INFO L226 Difference]: Without dead ends: 1044 [2023-11-06 22:26:20,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 426 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2023-11-06 22:26:20,876 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:20,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 780 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:26:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-11-06 22:26:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 954. [2023-11-06 22:26:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 750 states have (on average 1.108) internal successors, (831), 758 states have internal predecessors, (831), 121 states have call successors, (121), 52 states have call predecessors, (121), 76 states have return successors, (220), 143 states have call predecessors, (220), 121 states have call successors, (220) [2023-11-06 22:26:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1172 transitions. [2023-11-06 22:26:20,986 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1172 transitions. Word has length 226 [2023-11-06 22:26:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:20,986 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1172 transitions. [2023-11-06 22:26:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 21 states have internal predecessors, (108), 14 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 10 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-06 22:26:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1172 transitions. [2023-11-06 22:26:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-06 22:26:20,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:20,989 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:20,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:21,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-06 22:26:21,190 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:21,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1525533749, now seen corresponding path program 6 times [2023-11-06 22:26:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:21,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470407934] [2023-11-06 22:26:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:21,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:21,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911190686] [2023-11-06 22:26:21,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:26:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:21,202 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:21,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-06 22:26:21,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-06 22:26:21,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:21,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:26:21,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 446 proven. 60 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-11-06 22:26:21,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 446 proven. 75 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-11-06 22:26:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470407934] [2023-11-06 22:26:22,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911190686] [2023-11-06 22:26:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911190686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:22,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:22,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 28 [2023-11-06 22:26:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118061973] [2023-11-06 22:26:22,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:26:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:26:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:26:22,404 INFO L87 Difference]: Start difference. First operand 954 states and 1172 transitions. Second operand has 28 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 15 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-06 22:26:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:23,484 INFO L93 Difference]: Finished difference Result 2118 states and 2687 transitions. [2023-11-06 22:26:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:26:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 15 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) Word has length 224 [2023-11-06 22:26:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:23,489 INFO L225 Difference]: With dead ends: 2118 [2023-11-06 22:26:23,490 INFO L226 Difference]: Without dead ends: 1284 [2023-11-06 22:26:23,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 414 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=1909, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 22:26:23,494 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 157 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:23,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 865 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:26:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-11-06 22:26:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1156. [2023-11-06 22:26:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 905 states have (on average 1.1082872928176795) internal successors, (1003), 910 states have internal predecessors, (1003), 152 states have call successors, (152), 63 states have call predecessors, (152), 92 states have return successors, (273), 182 states have call predecessors, (273), 152 states have call successors, (273) [2023-11-06 22:26:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1428 transitions. [2023-11-06 22:26:23,639 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1428 transitions. Word has length 224 [2023-11-06 22:26:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:23,640 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1428 transitions. [2023-11-06 22:26:23,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 15 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-06 22:26:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1428 transitions. [2023-11-06 22:26:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-06 22:26:23,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:23,643 INFO L195 NwaCegarLoop]: trace histogram [24, 21, 12, 12, 12, 12, 12, 10, 10, 10, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:23,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-06 22:26:23,849 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:23,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2120800619, now seen corresponding path program 6 times [2023-11-06 22:26:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304582097] [2023-11-06 22:26:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:23,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724674828] [2023-11-06 22:26:23,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:26:23,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:23,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:23,862 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:23,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-06 22:26:23,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-06 22:26:23,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:23,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:23,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2023-11-06 22:26:24,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:24,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:24,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304582097] [2023-11-06 22:26:24,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:24,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724674828] [2023-11-06 22:26:24,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724674828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:24,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:24,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:26:24,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048445784] [2023-11-06 22:26:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:26:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:26:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:24,019 INFO L87 Difference]: Start difference. First operand 1156 states and 1428 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:24,289 INFO L93 Difference]: Finished difference Result 1936 states and 2411 transitions. [2023-11-06 22:26:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:26:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 244 [2023-11-06 22:26:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:24,294 INFO L225 Difference]: With dead ends: 1936 [2023-11-06 22:26:24,294 INFO L226 Difference]: Without dead ends: 1133 [2023-11-06 22:26:24,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:26:24,298 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:24,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 300 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-11-06 22:26:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1126. [2023-11-06 22:26:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 884 states have (on average 1.1040723981900453) internal successors, (976), 886 states have internal predecessors, (976), 149 states have call successors, (149), 60 states have call predecessors, (149), 86 states have return successors, (258), 179 states have call predecessors, (258), 149 states have call successors, (258) [2023-11-06 22:26:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1383 transitions. [2023-11-06 22:26:24,419 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1383 transitions. Word has length 244 [2023-11-06 22:26:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:24,419 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1383 transitions. [2023-11-06 22:26:24,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1383 transitions. [2023-11-06 22:26:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-06 22:26:24,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:24,423 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 11, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:24,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:24,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-06 22:26:24,628 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:24,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2107960947, now seen corresponding path program 7 times [2023-11-06 22:26:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017176099] [2023-11-06 22:26:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:24,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699274649] [2023-11-06 22:26:24,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:26:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:24,644 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:24,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-06 22:26:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:24,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:26:24,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 591 proven. 20 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2023-11-06 22:26:24,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 109 proven. 42 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-06 22:26:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:25,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017176099] [2023-11-06 22:26:25,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:25,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699274649] [2023-11-06 22:26:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699274649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:25,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2023-11-06 22:26:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901745654] [2023-11-06 22:26:25,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:26:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:25,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:26:25,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:26:25,226 INFO L87 Difference]: Start difference. First operand 1126 states and 1383 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:26:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:25,760 INFO L93 Difference]: Finished difference Result 1182 states and 1442 transitions. [2023-11-06 22:26:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:26:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 244 [2023-11-06 22:26:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:25,764 INFO L225 Difference]: With dead ends: 1182 [2023-11-06 22:26:25,764 INFO L226 Difference]: Without dead ends: 1133 [2023-11-06 22:26:25,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 467 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:26:25,765 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:25,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 603 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-11-06 22:26:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1130. [2023-11-06 22:26:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 887 states have (on average 1.1037204058624577) internal successors, (979), 889 states have internal predecessors, (979), 149 states have call successors, (149), 61 states have call predecessors, (149), 87 states have return successors, (258), 179 states have call predecessors, (258), 149 states have call successors, (258) [2023-11-06 22:26:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1386 transitions. [2023-11-06 22:26:25,873 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1386 transitions. Word has length 244 [2023-11-06 22:26:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:25,873 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1386 transitions. [2023-11-06 22:26:25,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:26:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1386 transitions. [2023-11-06 22:26:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-06 22:26:25,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:25,876 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 13, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:25,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-06 22:26:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:26,082 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:26,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -856204823, now seen corresponding path program 5 times [2023-11-06 22:26:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241949500] [2023-11-06 22:26:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:26,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182684064] [2023-11-06 22:26:26,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:26:26,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:26,092 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:26,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-06 22:26:26,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-06 22:26:26,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:26,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:26:26,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 367 proven. 36 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-11-06 22:26:26,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-11-06 22:26:26,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241949500] [2023-11-06 22:26:26,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182684064] [2023-11-06 22:26:26,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182684064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:26,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:26,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-06 22:26:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195136415] [2023-11-06 22:26:26,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:26,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:26:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:26,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:26:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:26,648 INFO L87 Difference]: Start difference. First operand 1130 states and 1386 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-06 22:26:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:26,978 INFO L93 Difference]: Finished difference Result 1909 states and 2352 transitions. [2023-11-06 22:26:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:26:26,983 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 242 [2023-11-06 22:26:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:26,987 INFO L225 Difference]: With dead ends: 1909 [2023-11-06 22:26:26,987 INFO L226 Difference]: Without dead ends: 1136 [2023-11-06 22:26:26,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 460 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:26:26,991 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:26,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 505 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-11-06 22:26:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1130. [2023-11-06 22:26:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 887 states have (on average 1.1025930101465615) internal successors, (978), 889 states have internal predecessors, (978), 149 states have call successors, (149), 61 states have call predecessors, (149), 87 states have return successors, (258), 179 states have call predecessors, (258), 149 states have call successors, (258) [2023-11-06 22:26:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1385 transitions. [2023-11-06 22:26:27,105 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1385 transitions. Word has length 242 [2023-11-06 22:26:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:27,105 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1385 transitions. [2023-11-06 22:26:27,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-06 22:26:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1385 transitions. [2023-11-06 22:26:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-06 22:26:27,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:27,109 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 14, 14, 14, 14, 14, 14, 14, 13, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:27,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:27,315 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:27,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2024193287, now seen corresponding path program 7 times [2023-11-06 22:26:27,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:27,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197415870] [2023-11-06 22:26:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:27,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:27,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211587314] [2023-11-06 22:26:27,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:26:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:27,326 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:27,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-06 22:26:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:27,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:26:27,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 508 proven. 68 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2023-11-06 22:26:27,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 508 proven. 74 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2023-11-06 22:26:28,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:28,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197415870] [2023-11-06 22:26:28,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:28,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211587314] [2023-11-06 22:26:28,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211587314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:28,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 30 [2023-11-06 22:26:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711021353] [2023-11-06 22:26:28,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:28,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:26:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:26:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:26:28,394 INFO L87 Difference]: Start difference. First operand 1130 states and 1385 transitions. Second operand has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 27 states have internal predecessors, (112), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-06 22:26:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:29,449 INFO L93 Difference]: Finished difference Result 2420 states and 3025 transitions. [2023-11-06 22:26:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:26:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 27 states have internal predecessors, (112), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) Word has length 268 [2023-11-06 22:26:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:29,453 INFO L225 Difference]: With dead ends: 2420 [2023-11-06 22:26:29,453 INFO L226 Difference]: Without dead ends: 1429 [2023-11-06 22:26:29,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 502 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=2030, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 22:26:29,457 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 133 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:29,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 730 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:26:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2023-11-06 22:26:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1338. [2023-11-06 22:26:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1058 states have (on average 1.1049149338374291) internal successors, (1169), 1058 states have internal predecessors, (1169), 172 states have call successors, (172), 72 states have call predecessors, (172), 101 states have return successors, (289), 207 states have call predecessors, (289), 172 states have call successors, (289) [2023-11-06 22:26:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1630 transitions. [2023-11-06 22:26:29,596 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1630 transitions. Word has length 268 [2023-11-06 22:26:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:29,597 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1630 transitions. [2023-11-06 22:26:29,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 27 states have internal predecessors, (112), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-06 22:26:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1630 transitions. [2023-11-06 22:26:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-06 22:26:29,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:29,601 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 16, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:29,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:29,808 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:29,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2104499353, now seen corresponding path program 6 times [2023-11-06 22:26:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:29,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790981138] [2023-11-06 22:26:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:29,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841487125] [2023-11-06 22:26:29,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:26:29,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:29,825 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:29,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-06 22:26:29,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:26:29,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:29,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:29,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 100 proven. 46 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2023-11-06 22:26:30,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 100 proven. 46 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2023-11-06 22:26:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790981138] [2023-11-06 22:26:30,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841487125] [2023-11-06 22:26:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841487125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:30,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:30,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:26:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577963331] [2023-11-06 22:26:30,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:30,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:30,361 INFO L87 Difference]: Start difference. First operand 1338 states and 1630 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 22:26:30,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:30,942 INFO L93 Difference]: Finished difference Result 1572 states and 1935 transitions. [2023-11-06 22:26:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:26:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 316 [2023-11-06 22:26:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:30,950 INFO L225 Difference]: With dead ends: 1572 [2023-11-06 22:26:30,950 INFO L226 Difference]: Without dead ends: 1571 [2023-11-06 22:26:30,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:30,957 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 117 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:30,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 590 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2023-11-06 22:26:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1558. [2023-11-06 22:26:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1230 states have (on average 1.113821138211382) internal successors, (1370), 1221 states have internal predecessors, (1370), 206 states have call successors, (206), 82 states have call predecessors, (206), 116 states have return successors, (351), 254 states have call predecessors, (351), 206 states have call successors, (351) [2023-11-06 22:26:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1927 transitions. [2023-11-06 22:26:31,072 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1927 transitions. Word has length 316 [2023-11-06 22:26:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:31,072 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 1927 transitions. [2023-11-06 22:26:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 22:26:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1927 transitions. [2023-11-06 22:26:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-11-06 22:26:31,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:31,076 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:31,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-11-06 22:26:31,282 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:31,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 505154717, now seen corresponding path program 1 times [2023-11-06 22:26:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011147833] [2023-11-06 22:26:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:31,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:31,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875579162] [2023-11-06 22:26:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:31,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:31,305 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:31,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-06 22:26:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:31,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:31,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2023-11-06 22:26:31,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011147833] [2023-11-06 22:26:31,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875579162] [2023-11-06 22:26:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875579162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:31,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:26:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681870441] [2023-11-06 22:26:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:31,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:26:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:26:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:31,643 INFO L87 Difference]: Start difference. First operand 1558 states and 1927 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 22:26:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:31,980 INFO L93 Difference]: Finished difference Result 2456 states and 3055 transitions. [2023-11-06 22:26:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:26:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 318 [2023-11-06 22:26:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:31,986 INFO L225 Difference]: With dead ends: 2456 [2023-11-06 22:26:31,986 INFO L226 Difference]: Without dead ends: 1468 [2023-11-06 22:26:31,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:26:31,991 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:31,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 352 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-11-06 22:26:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1466. [2023-11-06 22:26:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1156 states have (on average 1.1038062283737025) internal successors, (1276), 1153 states have internal predecessors, (1276), 190 states have call successors, (190), 82 states have call predecessors, (190), 114 states have return successors, (311), 230 states have call predecessors, (311), 190 states have call successors, (311) [2023-11-06 22:26:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1777 transitions. [2023-11-06 22:26:32,146 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1777 transitions. Word has length 318 [2023-11-06 22:26:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:32,146 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 1777 transitions. [2023-11-06 22:26:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 22:26:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1777 transitions. [2023-11-06 22:26:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-06 22:26:32,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:32,150 INFO L195 NwaCegarLoop]: trace histogram [34, 32, 19, 19, 19, 19, 18, 18, 18, 17, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:32,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:32,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-06 22:26:32,356 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:32,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2135428040, now seen corresponding path program 8 times [2023-11-06 22:26:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713653010] [2023-11-06 22:26:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:32,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296206855] [2023-11-06 22:26:32,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:32,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:32,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:32,378 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:32,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-06 22:26:32,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:32,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:32,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:26:32,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 1806 proven. 69 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2023-11-06 22:26:32,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 565 proven. 293 refuted. 0 times theorem prover too weak. 2397 trivial. 0 not checked. [2023-11-06 22:26:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:33,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713653010] [2023-11-06 22:26:33,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:33,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296206855] [2023-11-06 22:26:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296206855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:33,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:33,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 19 [2023-11-06 22:26:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571561050] [2023-11-06 22:26:33,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:26:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:33,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:26:33,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:26:33,586 INFO L87 Difference]: Start difference. First operand 1466 states and 1777 transitions. Second operand has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-06 22:26:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:34,262 INFO L93 Difference]: Finished difference Result 3070 states and 3874 transitions. [2023-11-06 22:26:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:26:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) Word has length 347 [2023-11-06 22:26:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:34,267 INFO L225 Difference]: With dead ends: 3070 [2023-11-06 22:26:34,267 INFO L226 Difference]: Without dead ends: 1688 [2023-11-06 22:26:34,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 665 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:26:34,272 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 64 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:34,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 514 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-11-06 22:26:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1457. [2023-11-06 22:26:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1147 states have (on average 1.107236268526591) internal successors, (1270), 1144 states have internal predecessors, (1270), 191 states have call successors, (191), 80 states have call predecessors, (191), 113 states have return successors, (319), 232 states have call predecessors, (319), 191 states have call successors, (319) [2023-11-06 22:26:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1780 transitions. [2023-11-06 22:26:34,402 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1780 transitions. Word has length 347 [2023-11-06 22:26:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:34,403 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1780 transitions. [2023-11-06 22:26:34,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-06 22:26:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1780 transitions. [2023-11-06 22:26:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-11-06 22:26:34,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:34,406 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 17, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:34,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:34,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-06 22:26:34,613 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:34,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:34,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1716140491, now seen corresponding path program 2 times [2023-11-06 22:26:34,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:34,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296291302] [2023-11-06 22:26:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:34,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:34,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336136745] [2023-11-06 22:26:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:34,632 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:34,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-06 22:26:34,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:26:34,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:34,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:26:34,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2023-11-06 22:26:34,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:34,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:34,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296291302] [2023-11-06 22:26:34,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:34,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336136745] [2023-11-06 22:26:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336136745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:34,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:26:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293013106] [2023-11-06 22:26:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:34,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:34,777 INFO L87 Difference]: Start difference. First operand 1457 states and 1780 transitions. Second operand has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:26:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:34,990 INFO L93 Difference]: Finished difference Result 1459 states and 1780 transitions. [2023-11-06 22:26:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:34,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 328 [2023-11-06 22:26:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:34,996 INFO L225 Difference]: With dead ends: 1459 [2023-11-06 22:26:34,996 INFO L226 Difference]: Without dead ends: 1458 [2023-11-06 22:26:34,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:26:35,000 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 27 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:35,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 233 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-11-06 22:26:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1456. [2023-11-06 22:26:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1147 states have (on average 1.0906713164777682) internal successors, (1251), 1143 states have internal predecessors, (1251), 191 states have call successors, (191), 80 states have call predecessors, (191), 113 states have return successors, (319), 232 states have call predecessors, (319), 191 states have call successors, (319) [2023-11-06 22:26:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1761 transitions. [2023-11-06 22:26:35,196 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1761 transitions. Word has length 328 [2023-11-06 22:26:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:35,196 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1761 transitions. [2023-11-06 22:26:35,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:26:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1761 transitions. [2023-11-06 22:26:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-11-06 22:26:35,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:35,199 INFO L195 NwaCegarLoop]: trace histogram [35, 33, 20, 20, 20, 20, 19, 19, 19, 18, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:35,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-06 22:26:35,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:35,400 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:35,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1110253984, now seen corresponding path program 9 times [2023-11-06 22:26:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:35,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730529064] [2023-11-06 22:26:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:35,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:35,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570194432] [2023-11-06 22:26:35,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:35,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,416 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-06 22:26:35,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:26:35,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:35,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:26:35,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 1982 proven. 9 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2023-11-06 22:26:35,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 659 proven. 233 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2023-11-06 22:26:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730529064] [2023-11-06 22:26:36,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570194432] [2023-11-06 22:26:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570194432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:36,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:36,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2023-11-06 22:26:36,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876028543] [2023-11-06 22:26:36,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:26:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:26:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:26:36,805 INFO L87 Difference]: Start difference. First operand 1456 states and 1761 transitions. Second operand has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) [2023-11-06 22:26:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:37,501 INFO L93 Difference]: Finished difference Result 2876 states and 3549 transitions. [2023-11-06 22:26:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:26:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) Word has length 357 [2023-11-06 22:26:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:37,506 INFO L225 Difference]: With dead ends: 2876 [2023-11-06 22:26:37,506 INFO L226 Difference]: Without dead ends: 1597 [2023-11-06 22:26:37,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 683 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 22:26:37,510 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 89 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:37,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 353 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2023-11-06 22:26:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1494. [2023-11-06 22:26:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1179 states have (on average 1.0916030534351144) internal successors, (1287), 1175 states have internal predecessors, (1287), 191 states have call successors, (191), 80 states have call predecessors, (191), 119 states have return successors, (333), 238 states have call predecessors, (333), 191 states have call successors, (333) [2023-11-06 22:26:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1811 transitions. [2023-11-06 22:26:37,637 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1811 transitions. Word has length 357 [2023-11-06 22:26:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1811 transitions. [2023-11-06 22:26:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) [2023-11-06 22:26:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1811 transitions. [2023-11-06 22:26:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-06 22:26:37,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:37,641 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:37,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-06 22:26:37,847 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:37,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1114780578, now seen corresponding path program 3 times [2023-11-06 22:26:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479098434] [2023-11-06 22:26:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:37,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317167016] [2023-11-06 22:26:37,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:37,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:37,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,868 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-06 22:26:38,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:26:38,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:38,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:26:38,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 283 proven. 60 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2023-11-06 22:26:38,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:40,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479098434] [2023-11-06 22:26:40,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317167016] [2023-11-06 22:26:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317167016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:40,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:40,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-06 22:26:40,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613800558] [2023-11-06 22:26:40,129 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:40,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:26:40,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:26:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:26:40,130 INFO L87 Difference]: Start difference. First operand 1494 states and 1811 transitions. Second operand has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 22:26:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:41,011 INFO L93 Difference]: Finished difference Result 2372 states and 2889 transitions. [2023-11-06 22:26:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:26:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 347 [2023-11-06 22:26:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:41,016 INFO L225 Difference]: With dead ends: 2372 [2023-11-06 22:26:41,016 INFO L226 Difference]: Without dead ends: 1325 [2023-11-06 22:26:41,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:26:41,021 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 58 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:41,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 684 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:26:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-06 22:26:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1296. [2023-11-06 22:26:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1022 states have (on average 1.086105675146771) internal successors, (1110), 1020 states have internal predecessors, (1110), 158 states have call successors, (158), 74 states have call predecessors, (158), 111 states have return successors, (288), 201 states have call predecessors, (288), 158 states have call successors, (288) [2023-11-06 22:26:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1556 transitions. [2023-11-06 22:26:41,192 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1556 transitions. Word has length 347 [2023-11-06 22:26:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:41,193 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1556 transitions. [2023-11-06 22:26:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 22:26:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1556 transitions. [2023-11-06 22:26:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-06 22:26:41,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:41,197 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 20, 20, 20, 20, 20, 20, 20, 19, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:41,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:41,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:41,403 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:41,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -736536281, now seen corresponding path program 10 times [2023-11-06 22:26:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224292646] [2023-11-06 22:26:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:41,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:41,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179820269] [2023-11-06 22:26:41,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:41,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:41,428 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:41,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-06 22:26:41,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:26:41,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:41,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:26:41,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3621 backedges. 1160 proven. 229 refuted. 0 times theorem prover too weak. 2232 trivial. 0 not checked. [2023-11-06 22:26:41,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3621 backedges. 1160 proven. 250 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2023-11-06 22:26:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224292646] [2023-11-06 22:26:43,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179820269] [2023-11-06 22:26:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179820269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:43,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:43,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 25 [2023-11-06 22:26:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294207335] [2023-11-06 22:26:43,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:26:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:26:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:26:43,056 INFO L87 Difference]: Start difference. First operand 1296 states and 1556 transitions. Second operand has 25 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2023-11-06 22:26:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:44,118 INFO L93 Difference]: Finished difference Result 2728 states and 3435 transitions. [2023-11-06 22:26:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:26:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) Word has length 362 [2023-11-06 22:26:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:44,125 INFO L225 Difference]: With dead ends: 2728 [2023-11-06 22:26:44,126 INFO L226 Difference]: Without dead ends: 1663 [2023-11-06 22:26:44,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 691 SyntacticMatches, 13 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=321, Invalid=1401, Unknown=0, NotChecked=0, Total=1722 [2023-11-06 22:26:44,131 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 176 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:44,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 562 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:26:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-11-06 22:26:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1421. [2023-11-06 22:26:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1114 states have (on average 1.082585278276481) internal successors, (1206), 1112 states have internal predecessors, (1206), 184 states have call successors, (184), 80 states have call predecessors, (184), 118 states have return successors, (356), 228 states have call predecessors, (356), 184 states have call successors, (356) [2023-11-06 22:26:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1746 transitions. [2023-11-06 22:26:44,318 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1746 transitions. Word has length 362 [2023-11-06 22:26:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:44,318 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1746 transitions. [2023-11-06 22:26:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2023-11-06 22:26:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1746 transitions. [2023-11-06 22:26:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-06 22:26:44,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:44,322 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 17, 17, 17, 17, 17, 17, 17, 17, 16, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:44,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:44,528 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:44,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1374321980, now seen corresponding path program 8 times [2023-11-06 22:26:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743101306] [2023-11-06 22:26:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:44,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:44,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007689356] [2023-11-06 22:26:44,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:44,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:44,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,549 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-06 22:26:44,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:44,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:44,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:26:44,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 333 proven. 81 refuted. 0 times theorem prover too weak. 2827 trivial. 0 not checked. [2023-11-06 22:26:44,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 333 proven. 81 refuted. 0 times theorem prover too weak. 2827 trivial. 0 not checked. [2023-11-06 22:26:45,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:45,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743101306] [2023-11-06 22:26:45,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:45,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007689356] [2023-11-06 22:26:45,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007689356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:45,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:45,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2023-11-06 22:26:45,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491063139] [2023-11-06 22:26:45,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:45,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:26:45,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:26:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:26:45,205 INFO L87 Difference]: Start difference. First operand 1421 states and 1746 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-06 22:26:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:45,602 INFO L93 Difference]: Finished difference Result 2392 states and 2995 transitions. [2023-11-06 22:26:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:26:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 364 [2023-11-06 22:26:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:45,607 INFO L225 Difference]: With dead ends: 2392 [2023-11-06 22:26:45,607 INFO L226 Difference]: Without dead ends: 1407 [2023-11-06 22:26:45,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 710 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:45,610 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 60 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:45,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 402 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2023-11-06 22:26:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1392. [2023-11-06 22:26:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1090 states have (on average 1.081651376146789) internal successors, (1179), 1089 states have internal predecessors, (1179), 183 states have call successors, (183), 80 states have call predecessors, (183), 114 states have return successors, (347), 222 states have call predecessors, (347), 183 states have call successors, (347) [2023-11-06 22:26:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1709 transitions. [2023-11-06 22:26:45,761 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1709 transitions. Word has length 364 [2023-11-06 22:26:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1709 transitions. [2023-11-06 22:26:45,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-06 22:26:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1709 transitions. [2023-11-06 22:26:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-11-06 22:26:45,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:45,765 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 21, 21, 21, 21, 21, 21, 21, 20, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:45,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:45,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:45,971 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:45,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1696958193, now seen corresponding path program 11 times [2023-11-06 22:26:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:45,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952264140] [2023-11-06 22:26:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:45,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318367543] [2023-11-06 22:26:45,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:26:45,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:45,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:46,001 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:46,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-06 22:26:46,261 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-06 22:26:46,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:46,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:26:46,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 978 proven. 392 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2023-11-06 22:26:46,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 954 proven. 432 refuted. 0 times theorem prover too weak. 2493 trivial. 0 not checked. [2023-11-06 22:26:47,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952264140] [2023-11-06 22:26:47,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318367543] [2023-11-06 22:26:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318367543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:47,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 40 [2023-11-06 22:26:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577278152] [2023-11-06 22:26:47,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-06 22:26:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-06 22:26:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:26:47,983 INFO L87 Difference]: Start difference. First operand 1392 states and 1709 transitions. Second operand has 40 states, 38 states have (on average 3.9473684210526314) internal successors, (150), 37 states have internal predecessors, (150), 21 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (29), 17 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-06 22:26:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:49,586 INFO L93 Difference]: Finished difference Result 2799 states and 3514 transitions. [2023-11-06 22:26:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 22:26:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 3.9473684210526314) internal successors, (150), 37 states have internal predecessors, (150), 21 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (29), 17 states have call predecessors, (29), 19 states have call successors, (29) Word has length 372 [2023-11-06 22:26:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:49,591 INFO L225 Difference]: With dead ends: 2799 [2023-11-06 22:26:49,591 INFO L226 Difference]: Without dead ends: 1632 [2023-11-06 22:26:49,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 699 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=490, Invalid=3800, Unknown=0, NotChecked=0, Total=4290 [2023-11-06 22:26:49,596 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 320 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:49,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 942 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:26:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-06 22:26:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1437. [2023-11-06 22:26:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1126 states have (on average 1.0817051509769093) internal successors, (1218), 1125 states have internal predecessors, (1218), 188 states have call successors, (188), 85 states have call predecessors, (188), 118 states have return successors, (357), 226 states have call predecessors, (357), 188 states have call successors, (357) [2023-11-06 22:26:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1763 transitions. [2023-11-06 22:26:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1763 transitions. Word has length 372 [2023-11-06 22:26:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:49,730 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1763 transitions. [2023-11-06 22:26:49,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 3.9473684210526314) internal successors, (150), 37 states have internal predecessors, (150), 21 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (29), 17 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-06 22:26:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1763 transitions. [2023-11-06 22:26:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-06 22:26:49,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:49,735 INFO L195 NwaCegarLoop]: trace histogram [41, 38, 25, 25, 25, 25, 23, 23, 23, 22, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:49,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-06 22:26:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:49,940 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:49,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1267938745, now seen corresponding path program 12 times [2023-11-06 22:26:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:49,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734292202] [2023-11-06 22:26:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:49,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:49,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347139808] [2023-11-06 22:26:49,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:26:49,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:49,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:49,957 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:49,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-06 22:26:50,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-11-06 22:26:50,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:50,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:26:50,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4941 backedges. 2152 proven. 135 refuted. 0 times theorem prover too weak. 2654 trivial. 0 not checked. [2023-11-06 22:26:50,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4941 backedges. 1072 proven. 348 refuted. 0 times theorem prover too weak. 3521 trivial. 0 not checked. [2023-11-06 22:26:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734292202] [2023-11-06 22:26:51,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347139808] [2023-11-06 22:26:51,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347139808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:51,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:51,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 23 [2023-11-06 22:26:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635791873] [2023-11-06 22:26:51,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:26:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:26:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:26:51,665 INFO L87 Difference]: Start difference. First operand 1437 states and 1763 transitions. Second operand has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) [2023-11-06 22:26:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:52,358 INFO L93 Difference]: Finished difference Result 2785 states and 3504 transitions. [2023-11-06 22:26:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:26:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) Word has length 422 [2023-11-06 22:26:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:52,365 INFO L225 Difference]: With dead ends: 2785 [2023-11-06 22:26:52,365 INFO L226 Difference]: Without dead ends: 1542 [2023-11-06 22:26:52,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 808 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:26:52,370 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:52,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 500 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2023-11-06 22:26:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1338. [2023-11-06 22:26:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1054 states have (on average 1.086337760910816) internal successors, (1145), 1053 states have internal predecessors, (1145), 167 states have call successors, (167), 82 states have call predecessors, (167), 112 states have return successors, (310), 202 states have call predecessors, (310), 167 states have call successors, (310) [2023-11-06 22:26:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1622 transitions. [2023-11-06 22:26:52,558 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1622 transitions. Word has length 422 [2023-11-06 22:26:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:52,559 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1622 transitions. [2023-11-06 22:26:52,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) [2023-11-06 22:26:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1622 transitions. [2023-11-06 22:26:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-11-06 22:26:52,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:52,566 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 19, 18, 18, 18, 18, 18, 18, 18, 17, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:26:52,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:52,773 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:52,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 882252115, now seen corresponding path program 9 times [2023-11-06 22:26:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325121500] [2023-11-06 22:26:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:52,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:52,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243727149] [2023-11-06 22:26:52,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:52,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:52,803 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:52,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-06 22:26:52,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:26:52,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:52,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:26:52,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3871 backedges. 1291 proven. 0 refuted. 0 times theorem prover too weak. 2580 trivial. 0 not checked. [2023-11-06 22:26:53,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325121500] [2023-11-06 22:26:53,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243727149] [2023-11-06 22:26:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243727149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:53,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:53,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:26:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60089491] [2023-11-06 22:26:53,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:26:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:26:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:26:53,144 INFO L87 Difference]: Start difference. First operand 1338 states and 1622 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 22:26:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:53,549 INFO L93 Difference]: Finished difference Result 2230 states and 2723 transitions. [2023-11-06 22:26:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:26:53,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 408 [2023-11-06 22:26:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:53,554 INFO L225 Difference]: With dead ends: 2230 [2023-11-06 22:26:53,554 INFO L226 Difference]: Without dead ends: 1439 [2023-11-06 22:26:53,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:26:53,556 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:53,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 285 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-11-06 22:26:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1390. [2023-11-06 22:26:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1101 states have (on average 1.0871934604904632) internal successors, (1197), 1098 states have internal predecessors, (1197), 167 states have call successors, (167), 82 states have call predecessors, (167), 117 states have return successors, (316), 209 states have call predecessors, (316), 167 states have call successors, (316) [2023-11-06 22:26:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1680 transitions. [2023-11-06 22:26:53,655 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1680 transitions. Word has length 408 [2023-11-06 22:26:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:53,655 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1680 transitions. [2023-11-06 22:26:53,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 22:26:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1680 transitions. [2023-11-06 22:26:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-11-06 22:26:53,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:53,660 INFO L195 NwaCegarLoop]: trace histogram [42, 39, 26, 26, 26, 26, 24, 24, 24, 23, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:53,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:53,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:53,864 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:53,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1263083985, now seen corresponding path program 13 times [2023-11-06 22:26:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390713140] [2023-11-06 22:26:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:53,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179219979] [2023-11-06 22:26:53,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:26:53,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:53,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:53,885 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:53,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-06 22:26:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:54,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:26:54,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5243 backedges. 2358 proven. 21 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2023-11-06 22:26:54,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5243 backedges. 1234 proven. 234 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2023-11-06 22:26:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390713140] [2023-11-06 22:26:55,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179219979] [2023-11-06 22:26:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179219979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:55,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 33 [2023-11-06 22:26:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826802742] [2023-11-06 22:26:55,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-06 22:26:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-06 22:26:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:26:55,708 INFO L87 Difference]: Start difference. First operand 1390 states and 1680 transitions. Second operand has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2023-11-06 22:26:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:56,533 INFO L93 Difference]: Finished difference Result 2660 states and 3261 transitions. [2023-11-06 22:26:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 22:26:56,534 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) Word has length 432 [2023-11-06 22:26:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:56,538 INFO L225 Difference]: With dead ends: 2660 [2023-11-06 22:26:56,538 INFO L226 Difference]: Without dead ends: 1504 [2023-11-06 22:26:56,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 826 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=1828, Unknown=0, NotChecked=0, Total=2162 [2023-11-06 22:26:56,541 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 130 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:56,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 454 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:26:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-11-06 22:26:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1385. [2023-11-06 22:26:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1097 states have (on average 1.0875113947128532) internal successors, (1193), 1094 states have internal predecessors, (1193), 167 states have call successors, (167), 82 states have call predecessors, (167), 116 states have return successors, (303), 208 states have call predecessors, (303), 167 states have call successors, (303) [2023-11-06 22:26:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1663 transitions. [2023-11-06 22:26:56,639 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1663 transitions. Word has length 432 [2023-11-06 22:26:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:56,639 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1663 transitions. [2023-11-06 22:26:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2023-11-06 22:26:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1663 transitions. [2023-11-06 22:26:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-06 22:26:56,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:56,643 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 21, 17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:56,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:56,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:56,844 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:56,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -56432756, now seen corresponding path program 4 times [2023-11-06 22:26:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:56,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033303782] [2023-11-06 22:26:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:56,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:56,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548070219] [2023-11-06 22:26:56,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:56,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:56,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:56,859 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:56,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-06 22:26:57,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:26:57,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:57,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:57,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 1441 proven. 0 refuted. 0 times theorem prover too weak. 2588 trivial. 0 not checked. [2023-11-06 22:26:57,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:57,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033303782] [2023-11-06 22:26:57,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:57,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548070219] [2023-11-06 22:26:57,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548070219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:57,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:26:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68438567] [2023-11-06 22:26:57,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:57,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:26:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:26:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:26:57,155 INFO L87 Difference]: Start difference. First operand 1385 states and 1663 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:26:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:57,422 INFO L93 Difference]: Finished difference Result 2289 states and 2784 transitions. [2023-11-06 22:26:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 411 [2023-11-06 22:26:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:57,428 INFO L225 Difference]: With dead ends: 2289 [2023-11-06 22:26:57,428 INFO L226 Difference]: Without dead ends: 1332 [2023-11-06 22:26:57,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:57,431 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 28 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:57,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 201 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2023-11-06 22:26:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1319. [2023-11-06 22:26:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1037 states have (on average 1.085824493731919) internal successors, (1126), 1039 states have internal predecessors, (1126), 167 states have call successors, (167), 82 states have call predecessors, (167), 110 states have return successors, (292), 197 states have call predecessors, (292), 167 states have call successors, (292) [2023-11-06 22:26:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1585 transitions. [2023-11-06 22:26:57,573 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1585 transitions. Word has length 411 [2023-11-06 22:26:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:57,574 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1585 transitions. [2023-11-06 22:26:57,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:26:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1585 transitions. [2023-11-06 22:26:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-11-06 22:26:57,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:57,579 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 25, 25, 25, 25, 25, 25, 25, 24, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:57,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-06 22:26:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:57,785 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:26:57,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1347185143, now seen corresponding path program 14 times [2023-11-06 22:26:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006392565] [2023-11-06 22:26:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:57,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961314910] [2023-11-06 22:26:57,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:57,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:57,807 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:57,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-06 22:26:58,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:58,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:58,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-06 22:26:58,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 1179 proven. 156 refuted. 0 times theorem prover too weak. 3901 trivial. 0 not checked. [2023-11-06 22:26:58,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006392565] [2023-11-06 22:27:07,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961314910] [2023-11-06 22:27:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961314910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:07,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:07,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-06 22:27:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725996506] [2023-11-06 22:27:07,896 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:27:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:27:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1287, Unknown=1, NotChecked=0, Total=1406 [2023-11-06 22:27:07,898 INFO L87 Difference]: Start difference. First operand 1319 states and 1585 transitions. Second operand has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-06 22:27:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:10,982 INFO L93 Difference]: Finished difference Result 1577 states and 1992 transitions. [2023-11-06 22:27:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:27:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) Word has length 432 [2023-11-06 22:27:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:10,987 INFO L225 Difference]: With dead ends: 1577 [2023-11-06 22:27:10,987 INFO L226 Difference]: Without dead ends: 1576 [2023-11-06 22:27:10,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=279, Invalid=2800, Unknown=1, NotChecked=0, Total=3080 [2023-11-06 22:27:10,989 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 101 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:10,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1753 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:27:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2023-11-06 22:27:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1442. [2023-11-06 22:27:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1130 states have (on average 1.0867256637168141) internal successors, (1228), 1132 states have internal predecessors, (1228), 186 states have call successors, (186), 89 states have call predecessors, (186), 121 states have return successors, (330), 220 states have call predecessors, (330), 186 states have call successors, (330) [2023-11-06 22:27:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1744 transitions. [2023-11-06 22:27:11,153 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1744 transitions. Word has length 432 [2023-11-06 22:27:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:11,154 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 1744 transitions. [2023-11-06 22:27:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-06 22:27:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1744 transitions. [2023-11-06 22:27:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-06 22:27:11,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:11,158 INFO L195 NwaCegarLoop]: trace histogram [42, 40, 26, 26, 26, 26, 25, 25, 25, 24, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:11,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:11,364 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:11,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1877325112, now seen corresponding path program 15 times [2023-11-06 22:27:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394516014] [2023-11-06 22:27:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:11,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520010322] [2023-11-06 22:27:11,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:27:11,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:11,385 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:11,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-06 22:27:11,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 22:27:11,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:11,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:27:11,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5393 backedges. 1174 proven. 59 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2023-11-06 22:27:11,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394516014] [2023-11-06 22:27:12,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520010322] [2023-11-06 22:27:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520010322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:12,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 22:27:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181603865] [2023-11-06 22:27:12,512 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:27:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:27:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:27:12,514 INFO L87 Difference]: Start difference. First operand 1442 states and 1744 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-06 22:27:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:13,055 INFO L93 Difference]: Finished difference Result 1566 states and 1968 transitions. [2023-11-06 22:27:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:27:13,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 437 [2023-11-06 22:27:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:13,060 INFO L225 Difference]: With dead ends: 1566 [2023-11-06 22:27:13,060 INFO L226 Difference]: Without dead ends: 1565 [2023-11-06 22:27:13,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:27:13,061 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:13,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 377 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:27:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-11-06 22:27:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1450. [2023-11-06 22:27:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1137 states have (on average 1.0844327176781003) internal successors, (1233), 1138 states have internal predecessors, (1233), 186 states have call successors, (186), 89 states have call predecessors, (186), 122 states have return successors, (332), 222 states have call predecessors, (332), 186 states have call successors, (332) [2023-11-06 22:27:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1751 transitions. [2023-11-06 22:27:13,201 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1751 transitions. Word has length 437 [2023-11-06 22:27:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:13,202 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1751 transitions. [2023-11-06 22:27:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-06 22:27:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1751 transitions. [2023-11-06 22:27:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-06 22:27:13,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:13,205 INFO L195 NwaCegarLoop]: trace histogram [44, 41, 28, 28, 28, 28, 26, 26, 26, 25, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:13,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-11-06 22:27:13,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-11-06 22:27:13,406 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:13,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1765715201, now seen corresponding path program 16 times [2023-11-06 22:27:13,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:13,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367803995] [2023-11-06 22:27:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:13,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137926778] [2023-11-06 22:27:13,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:27:13,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:13,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:13,439 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:13,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-11-06 22:27:13,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:27:13,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:13,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 22:27:13,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5877 backedges. 2161 proven. 584 refuted. 0 times theorem prover too weak. 3132 trivial. 0 not checked. [2023-11-06 22:27:14,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5877 backedges. 2161 proven. 640 refuted. 0 times theorem prover too weak. 3076 trivial. 0 not checked. [2023-11-06 22:27:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367803995] [2023-11-06 22:27:16,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137926778] [2023-11-06 22:27:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137926778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:16,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:16,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 35] total 46 [2023-11-06 22:27:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145345861] [2023-11-06 22:27:16,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:16,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 22:27:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 22:27:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:27:16,938 INFO L87 Difference]: Start difference. First operand 1450 states and 1751 transitions. Second operand has 46 states, 42 states have (on average 4.214285714285714) internal successors, (177), 41 states have internal predecessors, (177), 25 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2023-11-06 22:27:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:19,188 INFO L93 Difference]: Finished difference Result 3875 states and 5449 transitions. [2023-11-06 22:27:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 22:27:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 4.214285714285714) internal successors, (177), 41 states have internal predecessors, (177), 25 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) Word has length 452 [2023-11-06 22:27:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:19,199 INFO L225 Difference]: With dead ends: 3875 [2023-11-06 22:27:19,199 INFO L226 Difference]: Without dead ends: 2617 [2023-11-06 22:27:19,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 853 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=953, Invalid=4899, Unknown=0, NotChecked=0, Total=5852 [2023-11-06 22:27:19,205 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 415 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:19,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 838 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:27:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-11-06 22:27:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2008. [2023-11-06 22:27:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1573 states have (on average 1.0991735537190082) internal successors, (1729), 1577 states have internal predecessors, (1729), 266 states have call successors, (266), 120 states have call predecessors, (266), 164 states have return successors, (594), 310 states have call predecessors, (594), 266 states have call successors, (594) [2023-11-06 22:27:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2589 transitions. [2023-11-06 22:27:19,518 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2589 transitions. Word has length 452 [2023-11-06 22:27:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 2589 transitions. [2023-11-06 22:27:19,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 4.214285714285714) internal successors, (177), 41 states have internal predecessors, (177), 25 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2023-11-06 22:27:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2589 transitions. [2023-11-06 22:27:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-11-06 22:27:19,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:19,523 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 20, 20, 20, 20, 20, 20, 20, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:19,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:19,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-11-06 22:27:19,730 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:19,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 263801491, now seen corresponding path program 10 times [2023-11-06 22:27:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217538924] [2023-11-06 22:27:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:19,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164390796] [2023-11-06 22:27:19,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:27:19,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:19,750 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-06 22:27:19,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:27:19,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:19,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:27:20,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1481 proven. 238 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-11-06 22:27:20,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1481 proven. 272 refuted. 0 times theorem prover too weak. 2636 trivial. 0 not checked. [2023-11-06 22:27:22,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217538924] [2023-11-06 22:27:22,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164390796] [2023-11-06 22:27:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164390796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:22,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28] total 39 [2023-11-06 22:27:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674120006] [2023-11-06 22:27:22,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-06 22:27:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-06 22:27:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2023-11-06 22:27:22,074 INFO L87 Difference]: Start difference. First operand 2008 states and 2589 transitions. Second operand has 39 states, 35 states have (on average 4.742857142857143) internal successors, (166), 38 states have internal predecessors, (166), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-06 22:27:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:24,938 INFO L93 Difference]: Finished difference Result 5266 states and 7562 transitions. [2023-11-06 22:27:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-06 22:27:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 4.742857142857143) internal successors, (166), 38 states have internal predecessors, (166), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 428 [2023-11-06 22:27:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:24,952 INFO L225 Difference]: With dead ends: 5266 [2023-11-06 22:27:24,952 INFO L226 Difference]: Without dead ends: 3853 [2023-11-06 22:27:24,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 818 SyntacticMatches, 8 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=8208, Unknown=0, NotChecked=0, Total=9312 [2023-11-06 22:27:24,958 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 513 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:24,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 804 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:27:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2023-11-06 22:27:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3085. [2023-11-06 22:27:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 2440 states have (on average 1.1184426229508198) internal successors, (2729), 2441 states have internal predecessors, (2729), 432 states have call successors, (432), 168 states have call predecessors, (432), 208 states have return successors, (971), 475 states have call predecessors, (971), 426 states have call successors, (971) [2023-11-06 22:27:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4132 transitions. [2023-11-06 22:27:25,354 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4132 transitions. Word has length 428 [2023-11-06 22:27:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:25,354 INFO L495 AbstractCegarLoop]: Abstraction has 3085 states and 4132 transitions. [2023-11-06 22:27:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 4.742857142857143) internal successors, (166), 38 states have internal predecessors, (166), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-06 22:27:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4132 transitions. [2023-11-06 22:27:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-06 22:27:25,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:25,358 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 21, 20, 20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:25,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:25,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-11-06 22:27:25,565 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:25,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 987766644, now seen corresponding path program 5 times [2023-11-06 22:27:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458014292] [2023-11-06 22:27:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:25,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:25,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982799856] [2023-11-06 22:27:25,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:27:25,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:25,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:25,582 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:25,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-06 22:27:25,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-06 22:27:25,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:25,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:27:25,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4821 backedges. 1769 proven. 226 refuted. 0 times theorem prover too weak. 2826 trivial. 0 not checked. [2023-11-06 22:27:26,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4821 backedges. 113 proven. 253 refuted. 0 times theorem prover too weak. 4455 trivial. 0 not checked. [2023-11-06 22:27:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458014292] [2023-11-06 22:27:26,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982799856] [2023-11-06 22:27:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982799856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:26,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2023-11-06 22:27:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101448003] [2023-11-06 22:27:26,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:27:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:27:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:27:26,835 INFO L87 Difference]: Start difference. First operand 3085 states and 4132 transitions. Second operand has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2023-11-06 22:27:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:27,700 INFO L93 Difference]: Finished difference Result 3362 states and 4435 transitions. [2023-11-06 22:27:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:27:27,701 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) Word has length 441 [2023-11-06 22:27:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:27,712 INFO L225 Difference]: With dead ends: 3362 [2023-11-06 22:27:27,712 INFO L226 Difference]: Without dead ends: 3035 [2023-11-06 22:27:27,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 845 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=1856, Unknown=0, NotChecked=0, Total=2162 [2023-11-06 22:27:27,715 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:27,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 454 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:27:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2023-11-06 22:27:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3008. [2023-11-06 22:27:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 2385 states have (on average 1.1169811320754717) internal successors, (2664), 2380 states have internal predecessors, (2664), 413 states have call successors, (413), 158 states have call predecessors, (413), 205 states have return successors, (927), 469 states have call predecessors, (927), 413 states have call successors, (927) [2023-11-06 22:27:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4004 transitions. [2023-11-06 22:27:28,155 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4004 transitions. Word has length 441 [2023-11-06 22:27:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:28,156 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4004 transitions. [2023-11-06 22:27:28,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2023-11-06 22:27:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4004 transitions. [2023-11-06 22:27:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-11-06 22:27:28,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:28,162 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:28,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:28,368 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:28,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1525866426, now seen corresponding path program 6 times [2023-11-06 22:27:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668820277] [2023-11-06 22:27:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:28,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352862616] [2023-11-06 22:27:28,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:27:28,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:28,388 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:28,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-06 22:27:28,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-06 22:27:28,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:28,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:27:28,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 534 proven. 2 refuted. 0 times theorem prover too weak. 6174 trivial. 0 not checked. [2023-11-06 22:27:28,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 534 proven. 3 refuted. 0 times theorem prover too weak. 6173 trivial. 0 not checked. [2023-11-06 22:27:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668820277] [2023-11-06 22:27:29,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352862616] [2023-11-06 22:27:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352862616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:29,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2023-11-06 22:27:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873739656] [2023-11-06 22:27:29,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:29,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:27:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:27:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:27:29,131 INFO L87 Difference]: Start difference. First operand 3008 states and 4004 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-06 22:27:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:29,652 INFO L93 Difference]: Finished difference Result 3033 states and 4070 transitions. [2023-11-06 22:27:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:27:29,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 515 [2023-11-06 22:27:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:29,662 INFO L225 Difference]: With dead ends: 3033 [2023-11-06 22:27:29,662 INFO L226 Difference]: Without dead ends: 3029 [2023-11-06 22:27:29,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1015 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:27:29,664 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:29,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 317 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:27:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2023-11-06 22:27:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 3008. [2023-11-06 22:27:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 2385 states have (on average 1.1169811320754717) internal successors, (2664), 2380 states have internal predecessors, (2664), 413 states have call successors, (413), 158 states have call predecessors, (413), 205 states have return successors, (886), 469 states have call predecessors, (886), 413 states have call successors, (886) [2023-11-06 22:27:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 3963 transitions. [2023-11-06 22:27:30,000 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 3963 transitions. Word has length 515 [2023-11-06 22:27:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:30,001 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 3963 transitions. [2023-11-06 22:27:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-06 22:27:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 3963 transitions. [2023-11-06 22:27:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-06 22:27:30,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:30,007 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:30,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:30,213 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:30,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1796465658, now seen corresponding path program 7 times [2023-11-06 22:27:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:30,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982515898] [2023-11-06 22:27:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:30,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:30,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123052680] [2023-11-06 22:27:30,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:27:30,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:30,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:30,240 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:30,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-06 22:27:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:30,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:27:30,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7392 backedges. 2379 proven. 9 refuted. 0 times theorem prover too weak. 5004 trivial. 0 not checked. [2023-11-06 22:27:30,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7392 backedges. 795 proven. 117 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2023-11-06 22:27:31,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982515898] [2023-11-06 22:27:31,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123052680] [2023-11-06 22:27:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123052680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:31,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:31,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 18 [2023-11-06 22:27:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880140647] [2023-11-06 22:27:31,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:31,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:27:31,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:27:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:27:31,267 INFO L87 Difference]: Start difference. First operand 3008 states and 3963 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-06 22:27:31,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:31,953 INFO L93 Difference]: Finished difference Result 3223 states and 4352 transitions. [2023-11-06 22:27:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:27:31,954 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 535 [2023-11-06 22:27:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:31,960 INFO L225 Difference]: With dead ends: 3223 [2023-11-06 22:27:31,960 INFO L226 Difference]: Without dead ends: 3041 [2023-11-06 22:27:31,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1042 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:27:31,962 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 91 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:31,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 580 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:27:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2023-11-06 22:27:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3003. [2023-11-06 22:27:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2381 states have (on average 1.1171776564468712) internal successors, (2660), 2376 states have internal predecessors, (2660), 413 states have call successors, (413), 158 states have call predecessors, (413), 204 states have return successors, (864), 468 states have call predecessors, (864), 413 states have call successors, (864) [2023-11-06 22:27:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 3937 transitions. [2023-11-06 22:27:32,276 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 3937 transitions. Word has length 535 [2023-11-06 22:27:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:32,276 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 3937 transitions. [2023-11-06 22:27:32,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-06 22:27:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 3937 transitions. [2023-11-06 22:27:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-11-06 22:27:32,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:32,279 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 21, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:32,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2023-11-06 22:27:32,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:32,480 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:32,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1804335591, now seen corresponding path program 1 times [2023-11-06 22:27:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:32,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958049443] [2023-11-06 22:27:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:32,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:32,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458910259] [2023-11-06 22:27:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:32,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:32,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:32,501 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:32,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-11-06 22:27:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:32,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:27:32,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 482 proven. 26 refuted. 0 times theorem prover too weak. 3353 trivial. 0 not checked. [2023-11-06 22:27:32,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 482 proven. 27 refuted. 0 times theorem prover too weak. 3352 trivial. 0 not checked. [2023-11-06 22:27:33,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958049443] [2023-11-06 22:27:33,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458910259] [2023-11-06 22:27:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458910259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:33,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:33,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2023-11-06 22:27:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720222936] [2023-11-06 22:27:33,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:33,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:27:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:27:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:27:33,562 INFO L87 Difference]: Start difference. First operand 3003 states and 3937 transitions. Second operand has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 9 states have call successors, (15), 1 states have call predecessors, (15), 4 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-06 22:27:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:34,185 INFO L93 Difference]: Finished difference Result 5125 states and 6861 transitions. [2023-11-06 22:27:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:27:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 9 states have call successors, (15), 1 states have call predecessors, (15), 4 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 420 [2023-11-06 22:27:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:34,193 INFO L225 Difference]: With dead ends: 5125 [2023-11-06 22:27:34,193 INFO L226 Difference]: Without dead ends: 3042 [2023-11-06 22:27:34,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 818 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:27:34,200 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 63 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:34,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 522 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:27:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-11-06 22:27:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3005. [2023-11-06 22:27:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2382 states have (on average 1.1171284634760705) internal successors, (2661), 2376 states have internal predecessors, (2661), 415 states have call successors, (415), 158 states have call predecessors, (415), 203 states have return successors, (856), 470 states have call predecessors, (856), 415 states have call successors, (856) [2023-11-06 22:27:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 3932 transitions. [2023-11-06 22:27:34,568 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 3932 transitions. Word has length 420 [2023-11-06 22:27:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:34,568 INFO L495 AbstractCegarLoop]: Abstraction has 3005 states and 3932 transitions. [2023-11-06 22:27:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 9 states have call successors, (15), 1 states have call predecessors, (15), 4 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-06 22:27:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 3932 transitions. [2023-11-06 22:27:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-06 22:27:34,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:34,572 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:34,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-11-06 22:27:34,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:34,773 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:34,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1897094790, now seen corresponding path program 8 times [2023-11-06 22:27:34,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:34,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610669677] [2023-11-06 22:27:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:34,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:34,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:34,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462558830] [2023-11-06 22:27:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:34,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:34,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:34,793 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:34,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-11-06 22:27:35,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:27:35,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:35,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:27:35,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7392 backedges. 440 proven. 116 refuted. 0 times theorem prover too weak. 6836 trivial. 0 not checked. [2023-11-06 22:27:35,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:35,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610669677] [2023-11-06 22:27:35,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462558830] [2023-11-06 22:27:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462558830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:35,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:27:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672978332] [2023-11-06 22:27:35,891 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:35,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:27:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:35,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:27:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:27:35,892 INFO L87 Difference]: Start difference. First operand 3005 states and 3932 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:27:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:36,708 INFO L93 Difference]: Finished difference Result 3037 states and 4018 transitions. [2023-11-06 22:27:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:27:36,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 535 [2023-11-06 22:27:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:36,714 INFO L225 Difference]: With dead ends: 3037 [2023-11-06 22:27:36,714 INFO L226 Difference]: Without dead ends: 3021 [2023-11-06 22:27:36,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:27:36,715 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 42 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:36,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 485 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:27:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-11-06 22:27:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3001. [2023-11-06 22:27:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2380 states have (on average 1.111344537815126) internal successors, (2645), 2374 states have internal predecessors, (2645), 413 states have call successors, (413), 158 states have call predecessors, (413), 203 states have return successors, (832), 468 states have call predecessors, (832), 413 states have call successors, (832) [2023-11-06 22:27:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3890 transitions. [2023-11-06 22:27:36,994 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3890 transitions. Word has length 535 [2023-11-06 22:27:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:36,995 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 3890 transitions. [2023-11-06 22:27:36,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:27:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3890 transitions. [2023-11-06 22:27:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-11-06 22:27:36,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:36,999 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:37,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-11-06 22:27:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:37,200 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:37,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1412929021, now seen corresponding path program 2 times [2023-11-06 22:27:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:37,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024341865] [2023-11-06 22:27:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:37,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185997168] [2023-11-06 22:27:37,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:37,228 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:37,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-11-06 22:27:37,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:27:37,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:37,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:27:37,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6468 backedges. 2 proven. 178 refuted. 0 times theorem prover too weak. 6288 trivial. 0 not checked. [2023-11-06 22:27:37,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6468 backedges. 2 proven. 178 refuted. 0 times theorem prover too weak. 6288 trivial. 0 not checked. [2023-11-06 22:27:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024341865] [2023-11-06 22:27:38,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185997168] [2023-11-06 22:27:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185997168] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:38,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-06 22:27:38,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219246477] [2023-11-06 22:27:38,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:27:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:27:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:27:38,295 INFO L87 Difference]: Start difference. First operand 3001 states and 3890 transitions. Second operand has 26 states, 25 states have (on average 5.12) internal successors, (128), 26 states have internal predecessors, (128), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-06 22:27:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:40,044 INFO L93 Difference]: Finished difference Result 3599 states and 4761 transitions. [2023-11-06 22:27:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-06 22:27:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.12) internal successors, (128), 26 states have internal predecessors, (128), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) Word has length 524 [2023-11-06 22:27:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:40,054 INFO L225 Difference]: With dead ends: 3599 [2023-11-06 22:27:40,054 INFO L226 Difference]: Without dead ends: 3571 [2023-11-06 22:27:40,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1022 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1818, Invalid=6924, Unknown=0, NotChecked=0, Total=8742 [2023-11-06 22:27:40,057 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 193 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 508 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:27:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2023-11-06 22:27:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2989. [2023-11-06 22:27:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2366 states have (on average 1.0946745562130178) internal successors, (2590), 2363 states have internal predecessors, (2590), 416 states have call successors, (416), 158 states have call predecessors, (416), 203 states have return successors, (843), 467 states have call predecessors, (843), 415 states have call successors, (843) [2023-11-06 22:27:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3849 transitions. [2023-11-06 22:27:40,507 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3849 transitions. Word has length 524 [2023-11-06 22:27:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:40,507 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 3849 transitions. [2023-11-06 22:27:40,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.12) internal successors, (128), 26 states have internal predecessors, (128), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-06 22:27:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3849 transitions. [2023-11-06 22:27:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-11-06 22:27:40,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:40,511 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 24, 19, 19, 19, 19, 19, 19, 19, 19, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:40,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-11-06 22:27:40,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:40,712 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:40,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2023403154, now seen corresponding path program 9 times [2023-11-06 22:27:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:40,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632370767] [2023-11-06 22:27:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:40,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917816694] [2023-11-06 22:27:40,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:27:40,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:40,729 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:40,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-11-06 22:27:40,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:27:40,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:40,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:27:40,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 1076 proven. 1 refuted. 0 times theorem prover too weak. 4118 trivial. 0 not checked. [2023-11-06 22:27:40,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 248 proven. 13 refuted. 0 times theorem prover too weak. 4934 trivial. 0 not checked. [2023-11-06 22:27:41,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632370767] [2023-11-06 22:27:41,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917816694] [2023-11-06 22:27:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917816694] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:41,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:41,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2023-11-06 22:27:41,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330533685] [2023-11-06 22:27:41,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:27:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:27:41,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:27:41,264 INFO L87 Difference]: Start difference. First operand 2989 states and 3849 transitions. Second operand has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 22:27:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:41,818 INFO L93 Difference]: Finished difference Result 3125 states and 4011 transitions. [2023-11-06 22:27:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:27:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 471 [2023-11-06 22:27:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:41,827 INFO L225 Difference]: With dead ends: 3125 [2023-11-06 22:27:41,827 INFO L226 Difference]: Without dead ends: 2989 [2023-11-06 22:27:41,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 926 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:27:41,829 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 61 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:41,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 381 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:27:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-11-06 22:27:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2989. [2023-11-06 22:27:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2366 states have (on average 1.0934065934065933) internal successors, (2587), 2363 states have internal predecessors, (2587), 416 states have call successors, (416), 158 states have call predecessors, (416), 203 states have return successors, (843), 467 states have call predecessors, (843), 415 states have call successors, (843) [2023-11-06 22:27:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3846 transitions. [2023-11-06 22:27:42,156 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3846 transitions. Word has length 471 [2023-11-06 22:27:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:42,156 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 3846 transitions. [2023-11-06 22:27:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 22:27:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3846 transitions. [2023-11-06 22:27:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-11-06 22:27:42,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:42,161 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 24, 21, 21, 21, 21, 21, 21, 21, 21, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:42,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-11-06 22:27:42,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:42,361 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:42,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash 705012562, now seen corresponding path program 10 times [2023-11-06 22:27:42,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:42,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962219701] [2023-11-06 22:27:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:42,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965282460] [2023-11-06 22:27:42,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:27:42,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:42,380 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:42,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-11-06 22:27:42,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:27:42,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:42,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:27:42,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2348 proven. 37 refuted. 0 times theorem prover too weak. 3392 trivial. 0 not checked. [2023-11-06 22:27:42,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 876 proven. 195 refuted. 0 times theorem prover too weak. 4706 trivial. 0 not checked. [2023-11-06 22:27:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962219701] [2023-11-06 22:27:43,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:27:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965282460] [2023-11-06 22:27:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965282460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:43,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 18 [2023-11-06 22:27:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595800940] [2023-11-06 22:27:43,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:43,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:27:43,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:27:43,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:27:43,557 INFO L87 Difference]: Start difference. First operand 2989 states and 3846 transitions. Second operand has 18 states, 16 states have (on average 7.3125) internal successors, (117), 18 states have internal predecessors, (117), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) [2023-11-06 22:27:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:44,456 INFO L93 Difference]: Finished difference Result 5047 states and 6608 transitions. [2023-11-06 22:27:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:27:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.3125) internal successors, (117), 18 states have internal predecessors, (117), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) Word has length 491 [2023-11-06 22:27:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:44,464 INFO L225 Difference]: With dead ends: 5047 [2023-11-06 22:27:44,464 INFO L226 Difference]: Without dead ends: 3008 [2023-11-06 22:27:44,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 961 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:27:44,471 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 54 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:44,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 657 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:27:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2023-11-06 22:27:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2989. [2023-11-06 22:27:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2366 states have (on average 1.0934065934065933) internal successors, (2587), 2363 states have internal predecessors, (2587), 416 states have call successors, (416), 158 states have call predecessors, (416), 203 states have return successors, (838), 467 states have call predecessors, (838), 415 states have call successors, (838) [2023-11-06 22:27:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3841 transitions. [2023-11-06 22:27:44,779 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3841 transitions. Word has length 491 [2023-11-06 22:27:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:44,779 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 3841 transitions. [2023-11-06 22:27:44,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.3125) internal successors, (117), 18 states have internal predecessors, (117), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) [2023-11-06 22:27:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3841 transitions. [2023-11-06 22:27:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-06 22:27:44,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:44,784 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 31, 31, 31, 31, 31, 31, 31, 30, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:44,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-11-06 22:27:44,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:44,984 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 22:27:44,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1356971085, now seen corresponding path program 17 times [2023-11-06 22:27:44,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076136522] [2023-11-06 22:27:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:44,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:27:45,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509204163] [2023-11-06 22:27:45,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:27:45,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:45,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:45,001 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:45,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa7f9f-83e9-41e2-9a83-4b57ea895f3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-11-06 22:27:45,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-06 22:27:45,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:45,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:27:45,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7664 backedges. 1721 proven. 574 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2023-11-06 22:27:45,885 INFO L327 TraceCheckSpWp]: Computing backward predicates...