./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:39:59,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:39:59,378 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 03:39:59,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:39:59,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:39:59,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:39:59,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:39:59,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:39:59,408 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:39:59,408 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:39:59,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:39:59,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:39:59,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:39:59,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:39:59,412 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:39:59,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:39:59,413 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:39:59,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:39:59,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:39:59,414 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:39:59,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:39:59,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:39:59,416 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:39:59,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:39:59,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:39:59,417 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:39:59,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:39:59,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:39:59,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:39:59,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:39:59,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:39:59,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:39:59,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:39:59,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:39:59,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:39:59,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:39:59,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:39:59,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:39:59,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:39:59,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:39:59,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:39:59,422 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_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2023-11-29 03:39:59,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:39:59,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:39:59,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:39:59,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:39:59,736 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:39:59,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-11-29 03:40:02,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:40:02,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:40:02,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-11-29 03:40:02,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/data/2387aeada/5fc928cc41c4421e9f2c47f068093362/FLAGde4aed70f [2023-11-29 03:40:02,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/data/2387aeada/5fc928cc41c4421e9f2c47f068093362 [2023-11-29 03:40:02,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:40:02,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:40:02,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:40:02,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:40:02,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:40:02,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:40:02" (1/1) ... [2023-11-29 03:40:02,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e78b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:02, skipping insertion in model container [2023-11-29 03:40:02,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:40:02" (1/1) ... [2023-11-29 03:40:02,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:40:03,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:40:03,022 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:40:03,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:40:03,051 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:40:03,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03 WrapperNode [2023-11-29 03:40:03,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:40:03,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:40:03,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:40:03,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:40:03,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,079 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-11-29 03:40:03,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:40:03,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:40:03,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:40:03,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:40:03,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,099 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 03:40:03,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:40:03,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:40:03,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:40:03,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:40:03,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (1/1) ... [2023-11-29 03:40:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:40:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:03,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:40:03,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:40:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-29 03:40:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-29 03:40:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:40:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:40:03,271 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:40:03,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:40:03,403 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:40:03,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:40:03,425 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:40:03,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:40:03 BoogieIcfgContainer [2023-11-29 03:40:03,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:40:03,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:40:03,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:40:03,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:40:03,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:40:02" (1/3) ... [2023-11-29 03:40:03,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238c6df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:40:03, skipping insertion in model container [2023-11-29 03:40:03,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:03" (2/3) ... [2023-11-29 03:40:03,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238c6df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:40:03, skipping insertion in model container [2023-11-29 03:40:03,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:40:03" (3/3) ... [2023-11-29 03:40:03,435 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2023-11-29 03:40:03,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:40:03,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 03:40:03,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:40:03,509 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46e38865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:40:03,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 03:40:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.75) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:40:03,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:03,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:40:03,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:03,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1651969229, now seen corresponding path program 1 times [2023-11-29 03:40:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:03,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643331535] [2023-11-29 03:40:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:03,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:03,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643331535] [2023-11-29 03:40:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643331535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:03,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18069109] [2023-11-29 03:40:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:40:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:40:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:40:03,770 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.75) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:03,884 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2023-11-29 03:40:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:40:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 03:40:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:03,894 INFO L225 Difference]: With dead ends: 62 [2023-11-29 03:40:03,894 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 03:40:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:40:03,901 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:03,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:40:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 03:40:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2023-11-29 03:40:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.565217391304348) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-11-29 03:40:03,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 6 [2023-11-29 03:40:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:03,938 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-11-29 03:40:03,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-11-29 03:40:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:40:03,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:03,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:03,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:40:03,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 328561491, now seen corresponding path program 1 times [2023-11-29 03:40:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074968676] [2023-11-29 03:40:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:04,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:04,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074968676] [2023-11-29 03:40:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074968676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:04,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:04,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606806291] [2023-11-29 03:40:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:04,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:40:04,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:40:04,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:40:04,036 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:04,083 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-29 03:40:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:40:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:40:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:04,086 INFO L225 Difference]: With dead ends: 33 [2023-11-29 03:40:04,086 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 03:40:04,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:40:04,089 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:04,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 03:40:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-29 03:40:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-29 03:40:04,102 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 7 [2023-11-29 03:40:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:04,102 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-29 03:40:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-29 03:40:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 03:40:04,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:04,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:40:04,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:04,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1705173347, now seen corresponding path program 1 times [2023-11-29 03:40:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188380988] [2023-11-29 03:40:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188380988] [2023-11-29 03:40:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188380988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790452889] [2023-11-29 03:40:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:04,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:04,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:04,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:40:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:40:04,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:04,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790452889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:04,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:04,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 03:40:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950215224] [2023-11-29 03:40:04,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:04,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:40:04,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:40:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:40:04,422 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:04,514 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-11-29 03:40:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:40:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 03:40:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:04,518 INFO L225 Difference]: With dead ends: 38 [2023-11-29 03:40:04,518 INFO L226 Difference]: Without dead ends: 37 [2023-11-29 03:40:04,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:40:04,521 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 152 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:04,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 63 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-29 03:40:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-11-29 03:40:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 03:40:04,535 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2023-11-29 03:40:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:04,536 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 03:40:04,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:40:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 03:40:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:40:04,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:04,538 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:04,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:40:04,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:40:04,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:04,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash -753523853, now seen corresponding path program 1 times [2023-11-29 03:40:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208654095] [2023-11-29 03:40:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:40:04,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:04,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208654095] [2023-11-29 03:40:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208654095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:04,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283093263] [2023-11-29 03:40:04,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:04,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:04,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:04,809 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:04,822 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-29 03:40:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-29 03:40:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:04,824 INFO L225 Difference]: With dead ends: 33 [2023-11-29 03:40:04,825 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 03:40:04,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:04,827 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:04,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 03:40:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-29 03:40:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-11-29 03:40:04,837 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2023-11-29 03:40:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:04,838 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-11-29 03:40:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-11-29 03:40:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:40:04,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:04,839 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:40:04,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:04,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash -753523798, now seen corresponding path program 1 times [2023-11-29 03:40:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:04,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354307164] [2023-11-29 03:40:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:40:04,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354307164] [2023-11-29 03:40:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354307164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:04,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437836217] [2023-11-29 03:40:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:04,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:04,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:04,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:04,893 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:04,905 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-11-29 03:40:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-29 03:40:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:04,907 INFO L225 Difference]: With dead ends: 30 [2023-11-29 03:40:04,907 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 03:40:04,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:04,908 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:04,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 03:40:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 03:40:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 03:40:04,916 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 15 [2023-11-29 03:40:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 03:40:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 03:40:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 03:40:04,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:04,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:40:04,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:04,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1884402903, now seen corresponding path program 1 times [2023-11-29 03:40:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327567007] [2023-11-29 03:40:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:40:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327567007] [2023-11-29 03:40:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327567007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765138096] [2023-11-29 03:40:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:04,972 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:05,005 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-11-29 03:40:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 03:40:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:05,007 INFO L225 Difference]: With dead ends: 43 [2023-11-29 03:40:05,007 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 03:40:05,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:40:05,009 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 03:40:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-11-29 03:40:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:40:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-11-29 03:40:05,018 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2023-11-29 03:40:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:05,018 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-11-29 03:40:05,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-11-29 03:40:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 03:40:05,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:05,020 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:05,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:40:05,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:05,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1884401205, now seen corresponding path program 1 times [2023-11-29 03:40:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924033258] [2023-11-29 03:40:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:40:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924033258] [2023-11-29 03:40:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924033258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:40:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582908887] [2023-11-29 03:40:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:40:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:40:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:40:05,104 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:05,128 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2023-11-29 03:40:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:40:05,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 03:40:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:05,130 INFO L225 Difference]: With dead ends: 59 [2023-11-29 03:40:05,130 INFO L226 Difference]: Without dead ends: 37 [2023-11-29 03:40:05,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:40:05,132 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:05,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-29 03:40:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-29 03:40:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:40:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-11-29 03:40:05,140 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 16 [2023-11-29 03:40:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:05,140 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-11-29 03:40:05,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:40:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-11-29 03:40:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:40:05,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:05,142 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:40:05,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:05,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1311627336, now seen corresponding path program 1 times [2023-11-29 03:40:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:05,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718187253] [2023-11-29 03:40:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:40:05,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718187253] [2023-11-29 03:40:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718187253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49359115] [2023-11-29 03:40:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:05,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:05,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:05,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:05,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:40:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:40:05,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:40:05,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:40:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49359115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:05,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:40:05,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-11-29 03:40:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307329517] [2023-11-29 03:40:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:40:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:40:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:40:05,450 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:40:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:05,496 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2023-11-29 03:40:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:40:05,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-29 03:40:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:05,498 INFO L225 Difference]: With dead ends: 37 [2023-11-29 03:40:05,498 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 03:40:05,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:40:05,499 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:05,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 03:40:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-29 03:40:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:40:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-29 03:40:05,509 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2023-11-29 03:40:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:05,509 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-29 03:40:05,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:40:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-29 03:40:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:40:05,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:05,511 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:05,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:40:05,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:40:05,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:05,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 922539257, now seen corresponding path program 1 times [2023-11-29 03:40:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579784670] [2023-11-29 03:40:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:40:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:05,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579784670] [2023-11-29 03:40:05,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579784670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:05,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608935526] [2023-11-29 03:40:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:05,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:05,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:40:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:05,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:40:05,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:40:05,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:40:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608935526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:06,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:06,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-11-29 03:40:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748421460] [2023-11-29 03:40:06,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:40:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:40:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:40:06,179 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 03:40:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:06,346 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2023-11-29 03:40:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:40:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2023-11-29 03:40:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:06,349 INFO L225 Difference]: With dead ends: 99 [2023-11-29 03:40:06,349 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 03:40:06,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:40:06,351 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:06,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 128 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:40:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 03:40:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2023-11-29 03:40:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:40:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-11-29 03:40:06,366 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 30 [2023-11-29 03:40:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:06,367 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-11-29 03:40:06,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 03:40:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-11-29 03:40:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 03:40:06,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:06,370 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 03:40:06,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:40:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:06,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1698340835, now seen corresponding path program 2 times [2023-11-29 03:40:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73938912] [2023-11-29 03:40:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 03:40:06,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73938912] [2023-11-29 03:40:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73938912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784867920] [2023-11-29 03:40:06,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:40:06,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:06,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:06,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:40:06,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:40:06,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:06,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:40:06,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 03:40:06,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 03:40:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784867920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:07,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2023-11-29 03:40:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063668450] [2023-11-29 03:40:07,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:40:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:40:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:40:07,543 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:07,772 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2023-11-29 03:40:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:40:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-11-29 03:40:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:07,775 INFO L225 Difference]: With dead ends: 136 [2023-11-29 03:40:07,775 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 03:40:07,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:40:07,777 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:07,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 133 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:40:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 03:40:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2023-11-29 03:40:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:40:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2023-11-29 03:40:07,793 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 66 [2023-11-29 03:40:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:07,794 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2023-11-29 03:40:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2023-11-29 03:40:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 03:40:07,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:07,797 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-11-29 03:40:07,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 03:40:08,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:08,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:08,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2067347252, now seen corresponding path program 3 times [2023-11-29 03:40:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:08,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727990659] [2023-11-29 03:40:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:40:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 103 proven. 42 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 03:40:08,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727990659] [2023-11-29 03:40:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727990659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994953247] [2023-11-29 03:40:08,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:40:08,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:08,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:08,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:08,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:40:08,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:40:08,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:08,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:40:08,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 55 proven. 5 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 03:40:08,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 55 proven. 5 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 03:40:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994953247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:09,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:09,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 30 [2023-11-29 03:40:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240436123] [2023-11-29 03:40:09,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:40:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:40:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:40:09,084 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:10,159 INFO L93 Difference]: Finished difference Result 170 states and 197 transitions. [2023-11-29 03:40:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 03:40:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 91 [2023-11-29 03:40:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:10,162 INFO L225 Difference]: With dead ends: 170 [2023-11-29 03:40:10,162 INFO L226 Difference]: Without dead ends: 143 [2023-11-29 03:40:10,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=771, Invalid=3519, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 03:40:10,166 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 92 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:10,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 204 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:40:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-29 03:40:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2023-11-29 03:40:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:40:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2023-11-29 03:40:10,182 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 91 [2023-11-29 03:40:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:10,183 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2023-11-29 03:40:10,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2023-11-29 03:40:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 03:40:10,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:10,187 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-11-29 03:40:10,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:40:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:10,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:10,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash -317381274, now seen corresponding path program 4 times [2023-11-29 03:40:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189780952] [2023-11-29 03:40:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 03:40:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189780952] [2023-11-29 03:40:10,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189780952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972032858] [2023-11-29 03:40:10,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:40:10,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:10,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:10,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:40:11,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:40:11,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:11,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:40:11,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 128 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-29 03:40:11,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 128 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-29 03:40:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972032858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:11,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:11,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2023-11-29 03:40:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400714501] [2023-11-29 03:40:11,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:11,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 03:40:11,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:11,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 03:40:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:40:11,679 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:12,508 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2023-11-29 03:40:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 03:40:12,509 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2023-11-29 03:40:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:12,511 INFO L225 Difference]: With dead ends: 187 [2023-11-29 03:40:12,511 INFO L226 Difference]: Without dead ends: 163 [2023-11-29 03:40:12,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1694, Invalid=4786, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 03:40:12,515 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 145 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:12,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 157 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:40:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-29 03:40:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 150. [2023-11-29 03:40:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 140 states have internal predecessors, (157), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:40:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2023-11-29 03:40:12,534 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 93 [2023-11-29 03:40:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:12,534 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2023-11-29 03:40:12,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2023-11-29 03:40:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 03:40:12,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:12,538 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2023-11-29 03:40:12,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:40:12,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:12,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:12,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -631422599, now seen corresponding path program 5 times [2023-11-29 03:40:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204743167] [2023-11-29 03:40:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:40:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 221 proven. 589 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 03:40:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204743167] [2023-11-29 03:40:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204743167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458379316] [2023-11-29 03:40:14,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:40:14,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:14,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:14,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:40:14,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 03:40:14,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:14,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:40:14,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 60 proven. 568 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 03:40:14,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 60 proven. 568 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 03:40:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458379316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:15,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 17, 17] total 61 [2023-11-29 03:40:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442917989] [2023-11-29 03:40:15,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 03:40:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 03:40:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 03:40:15,633 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 03:40:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:16,794 INFO L93 Difference]: Finished difference Result 742 states and 840 transitions. [2023-11-29 03:40:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 03:40:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 144 [2023-11-29 03:40:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:16,798 INFO L225 Difference]: With dead ends: 742 [2023-11-29 03:40:16,798 INFO L226 Difference]: Without dead ends: 450 [2023-11-29 03:40:16,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6791 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2514, Invalid=14516, Unknown=0, NotChecked=0, Total=17030 [2023-11-29 03:40:16,805 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 217 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:16,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 306 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:40:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-29 03:40:16,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 234. [2023-11-29 03:40:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 219 states have (on average 1.091324200913242) internal successors, (239), 219 states have internal predecessors, (239), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:40:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2023-11-29 03:40:16,830 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 144 [2023-11-29 03:40:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:16,830 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2023-11-29 03:40:16,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 03:40:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2023-11-29 03:40:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 03:40:16,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:16,834 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:40:16,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:40:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:40:17,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:17,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1320163491, now seen corresponding path program 6 times [2023-11-29 03:40:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:17,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26082738] [2023-11-29 03:40:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1643 proven. 51 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2023-11-29 03:40:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26082738] [2023-11-29 03:40:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26082738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822585519] [2023-11-29 03:40:18,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:40:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:18,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:18,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:40:18,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 03:40:18,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:18,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:40:18,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1296 proven. 327 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-11-29 03:40:18,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1296 proven. 327 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-11-29 03:40:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822585519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:19,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 45 [2023-11-29 03:40:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263453338] [2023-11-29 03:40:19,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 03:40:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 03:40:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1744, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:40:19,523 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 03:40:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:21,749 INFO L93 Difference]: Finished difference Result 737 states and 839 transitions. [2023-11-29 03:40:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 03:40:21,750 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 234 [2023-11-29 03:40:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:21,754 INFO L225 Difference]: With dead ends: 737 [2023-11-29 03:40:21,754 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 03:40:21,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2515, Invalid=15041, Unknown=0, NotChecked=0, Total=17556 [2023-11-29 03:40:21,762 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 347 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:21,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 304 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:40:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 03:40:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 261. [2023-11-29 03:40:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 246 states have (on average 1.089430894308943) internal successors, (268), 246 states have internal predecessors, (268), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:40:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2023-11-29 03:40:21,810 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 234 [2023-11-29 03:40:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:21,811 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2023-11-29 03:40:21,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 03:40:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2023-11-29 03:40:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-29 03:40:21,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:21,815 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:40:21,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:40:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:40:22,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:22,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -686969414, now seen corresponding path program 7 times [2023-11-29 03:40:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879712314] [2023-11-29 03:40:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:40:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2536 proven. 90 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2023-11-29 03:40:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879712314] [2023-11-29 03:40:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879712314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540780605] [2023-11-29 03:40:23,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:40:23,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:23,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:23,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:23,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:40:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:24,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:40:24,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2054 proven. 177 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2023-11-29 03:40:24,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2054 proven. 177 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2023-11-29 03:40:28,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540780605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:28,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 37 [2023-11-29 03:40:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634821723] [2023-11-29 03:40:28,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:28,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:40:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:40:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 03:40:28,364 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 03:40:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:29,272 INFO L93 Difference]: Finished difference Result 436 states and 480 transitions. [2023-11-29 03:40:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 03:40:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 277 [2023-11-29 03:40:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:29,274 INFO L225 Difference]: With dead ends: 436 [2023-11-29 03:40:29,274 INFO L226 Difference]: Without dead ends: 267 [2023-11-29 03:40:29,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 538 SyntacticMatches, 26 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=734, Invalid=4668, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 03:40:29,278 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:29,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 360 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:40:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-29 03:40:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-11-29 03:40:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 252 states have (on average 1.0714285714285714) internal successors, (270), 252 states have internal predecessors, (270), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:40:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 285 transitions. [2023-11-29 03:40:29,307 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 285 transitions. Word has length 277 [2023-11-29 03:40:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:29,308 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 285 transitions. [2023-11-29 03:40:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 03:40:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 285 transitions. [2023-11-29 03:40:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 03:40:29,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:29,312 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:40:29,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:40:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:40:29,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -920814743, now seen corresponding path program 8 times [2023-11-29 03:40:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753034182] [2023-11-29 03:40:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2905 proven. 138 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2023-11-29 03:40:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753034182] [2023-11-29 03:40:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753034182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600881980] [2023-11-29 03:40:30,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:40:30,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:30,934 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:30,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:40:31,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:40:31,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:31,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 03:40:31,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2700 proven. 311 refuted. 0 times theorem prover too weak. 1841 trivial. 0 not checked. [2023-11-29 03:40:31,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2700 proven. 311 refuted. 0 times theorem prover too weak. 1841 trivial. 0 not checked. [2023-11-29 03:40:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600881980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:36,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:36,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-11-29 03:40:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036670114] [2023-11-29 03:40:36,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:36,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 03:40:36,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 03:40:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:40:36,140 INFO L87 Difference]: Start difference. First operand 267 states and 285 transitions. Second operand has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 03:40:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:37,426 INFO L93 Difference]: Finished difference Result 427 states and 463 transitions. [2023-11-29 03:40:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 03:40:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 276 [2023-11-29 03:40:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:37,428 INFO L225 Difference]: With dead ends: 427 [2023-11-29 03:40:37,428 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 03:40:37,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 528 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 03:40:37,430 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:37,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 402 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:40:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 03:40:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-29 03:40:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 258 states have (on average 1.058139534883721) internal successors, (273), 258 states have internal predecessors, (273), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:40:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 288 transitions. [2023-11-29 03:40:37,470 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 288 transitions. Word has length 276 [2023-11-29 03:40:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 288 transitions. [2023-11-29 03:40:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 03:40:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 288 transitions. [2023-11-29 03:40:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-29 03:40:37,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:37,474 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:40:37,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:40:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:40:37,675 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:37,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1770716451, now seen corresponding path program 9 times [2023-11-29 03:40:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879513533] [2023-11-29 03:40:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5177 backedges. 3217 proven. 491 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2023-11-29 03:40:39,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:39,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879513533] [2023-11-29 03:40:39,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879513533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:39,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586394433] [2023-11-29 03:40:39,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:40:39,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:39,455 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:39,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:40:39,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 03:40:39,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:39,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:40:39,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5177 backedges. 2150 proven. 322 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2023-11-29 03:40:40,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5177 backedges. 2150 proven. 322 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2023-11-29 03:40:41,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586394433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:41,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 20, 20] total 72 [2023-11-29 03:40:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966089494] [2023-11-29 03:40:41,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:41,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 03:40:41,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 03:40:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=4524, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 03:40:41,150 INFO L87 Difference]: Start difference. First operand 273 states and 288 transitions. Second operand has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:46,702 INFO L93 Difference]: Finished difference Result 795 states and 901 transitions. [2023-11-29 03:40:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-11-29 03:40:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 282 [2023-11-29 03:40:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:46,705 INFO L225 Difference]: With dead ends: 795 [2023-11-29 03:40:46,706 INFO L226 Difference]: Without dead ends: 611 [2023-11-29 03:40:46,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14452 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6516, Invalid=43436, Unknown=0, NotChecked=0, Total=49952 [2023-11-29 03:40:46,710 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 859 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:46,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 572 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-29 03:40:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 327. [2023-11-29 03:40:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 312 states have (on average 1.0705128205128205) internal successors, (334), 312 states have internal predecessors, (334), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:40:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 349 transitions. [2023-11-29 03:40:46,775 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 349 transitions. Word has length 282 [2023-11-29 03:40:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:46,776 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 349 transitions. [2023-11-29 03:40:46,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:40:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 349 transitions. [2023-11-29 03:40:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-11-29 03:40:46,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:46,780 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:40:46,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:40:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:40:46,981 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:46,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1802335081, now seen corresponding path program 10 times [2023-11-29 03:40:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799067611] [2023-11-29 03:40:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:40:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:48,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3258 proven. 3292 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2023-11-29 03:40:49,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:49,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799067611] [2023-11-29 03:40:49,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799067611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:49,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830066216] [2023-11-29 03:40:49,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:40:49,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:49,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:49,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:49,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:40:49,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:40:49,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:40:50,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 03:40:50,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2526 proven. 330 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2023-11-29 03:40:51,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2526 proven. 330 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2023-11-29 03:40:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830066216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:52,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:52,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 33, 33] total 114 [2023-11-29 03:40:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790691459] [2023-11-29 03:40:52,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-11-29 03:40:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-11-29 03:40:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1803, Invalid=11079, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 03:40:52,680 INFO L87 Difference]: Start difference. First operand 327 states and 349 transitions. Second operand has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 03:40:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:57,072 INFO L93 Difference]: Finished difference Result 752 states and 848 transitions. [2023-11-29 03:40:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-11-29 03:40:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 324 [2023-11-29 03:40:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:57,075 INFO L225 Difference]: With dead ends: 752 [2023-11-29 03:40:57,075 INFO L226 Difference]: Without dead ends: 534 [2023-11-29 03:40:57,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22509 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15095, Invalid=51727, Unknown=0, NotChecked=0, Total=66822 [2023-11-29 03:40:57,080 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1313 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:57,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 292 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:40:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-11-29 03:40:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 456. [2023-11-29 03:40:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 440 states have (on average 1.0818181818181818) internal successors, (476), 440 states have internal predecessors, (476), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 03:40:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 492 transitions. [2023-11-29 03:40:57,137 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 492 transitions. Word has length 324 [2023-11-29 03:40:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:57,137 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 492 transitions. [2023-11-29 03:40:57,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 03:40:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 492 transitions. [2023-11-29 03:40:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-11-29 03:40:57,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:57,140 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 15, 14, 14, 14, 14, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1] [2023-11-29 03:40:57,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:40:57,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:40:57,341 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:40:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -695369095, now seen corresponding path program 11 times [2023-11-29 03:40:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781715482] [2023-11-29 03:40:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:40:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:40:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6592 proven. 4857 refuted. 0 times theorem prover too weak. 2807 trivial. 0 not checked. [2023-11-29 03:41:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781715482] [2023-11-29 03:41:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781715482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365384925] [2023-11-29 03:41:01,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:41:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:01,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:01,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:41:01,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-11-29 03:41:01,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:41:01,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 03:41:01,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6867 proven. 4971 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2023-11-29 03:41:02,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6867 proven. 4971 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2023-11-29 03:41:10,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365384925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:41:10,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:41:10,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 60, 60] total 96 [2023-11-29 03:41:10,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679601287] [2023-11-29 03:41:10,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:41:10,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 03:41:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 03:41:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=8204, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 03:41:10,292 INFO L87 Difference]: Start difference. First operand 456 states and 492 transitions. Second operand has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 03:41:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:16,135 INFO L93 Difference]: Finished difference Result 1147 states and 1249 transitions. [2023-11-29 03:41:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2023-11-29 03:41:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 420 [2023-11-29 03:41:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:16,140 INFO L225 Difference]: With dead ends: 1147 [2023-11-29 03:41:16,140 INFO L226 Difference]: Without dead ends: 864 [2023-11-29 03:41:16,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 793 SyntacticMatches, 32 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48373 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=15866, Invalid=90736, Unknown=0, NotChecked=0, Total=106602 [2023-11-29 03:41:16,153 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 700 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:16,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 347 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:41:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-11-29 03:41:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 816. [2023-11-29 03:41:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 790 states have (on average 1.0772151898734177) internal successors, (851), 790 states have internal predecessors, (851), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:41:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 877 transitions. [2023-11-29 03:41:16,301 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 877 transitions. Word has length 420 [2023-11-29 03:41:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:16,302 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 877 transitions. [2023-11-29 03:41:16,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 03:41:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 877 transitions. [2023-11-29 03:41:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-11-29 03:41:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:16,311 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 20, 19, 19, 19, 19, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1] [2023-11-29 03:41:16,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:41:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:16,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:41:16,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -227278220, now seen corresponding path program 12 times [2023-11-29 03:41:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359429953] [2023-11-29 03:41:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:41:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 29481 backedges. 17146 proven. 336 refuted. 0 times theorem prover too weak. 11999 trivial. 0 not checked. [2023-11-29 03:41:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359429953] [2023-11-29 03:41:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359429953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711685230] [2023-11-29 03:41:21,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:41:21,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:21,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:21,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:41:21,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-11-29 03:41:21,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:41:21,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:41:21,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 29481 backedges. 14225 proven. 4265 refuted. 0 times theorem prover too weak. 10991 trivial. 0 not checked. [2023-11-29 03:41:22,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 29481 backedges. 14225 proven. 4265 refuted. 0 times theorem prover too weak. 10991 trivial. 0 not checked. [2023-11-29 03:41:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711685230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:41:25,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:41:25,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 28, 28] total 91 [2023-11-29 03:41:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828564120] [2023-11-29 03:41:25,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:41:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-29 03:41:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-29 03:41:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=831, Invalid=7359, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 03:41:25,496 INFO L87 Difference]: Start difference. First operand 816 states and 877 transitions. Second operand has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 84 states have internal predecessors, (183), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 03:41:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:35,316 INFO L93 Difference]: Finished difference Result 1845 states and 2041 transitions. [2023-11-29 03:41:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2023-11-29 03:41:35,316 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 84 states have internal predecessors, (183), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 595 [2023-11-29 03:41:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:35,321 INFO L225 Difference]: With dead ends: 1845 [2023-11-29 03:41:35,322 INFO L226 Difference]: Without dead ends: 977 [2023-11-29 03:41:35,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38100 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=13033, Invalid=100873, Unknown=0, NotChecked=0, Total=113906 [2023-11-29 03:41:35,329 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2085 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:35,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 585 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:41:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-29 03:41:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 786. [2023-11-29 03:41:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 763 states have (on average 1.089121887287025) internal successors, (831), 763 states have internal predecessors, (831), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 03:41:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 854 transitions. [2023-11-29 03:41:35,453 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 854 transitions. Word has length 595 [2023-11-29 03:41:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:35,454 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 854 transitions. [2023-11-29 03:41:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 84 states have internal predecessors, (183), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 03:41:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 854 transitions. [2023-11-29 03:41:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-11-29 03:41:35,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:35,461 INFO L195 NwaCegarLoop]: trace histogram [172, 172, 172, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1] [2023-11-29 03:41:35,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:41:35,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:35,661 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:41:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash 283383561, now seen corresponding path program 13 times [2023-11-29 03:41:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500786093] [2023-11-29 03:41:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:41:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:41:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 49305 backedges. 28546 proven. 420 refuted. 0 times theorem prover too weak. 20339 trivial. 0 not checked. [2023-11-29 03:41:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500786093] [2023-11-29 03:41:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500786093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675951423] [2023-11-29 03:41:42,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:41:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:42,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:42,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:41:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:42,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 03:41:42,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 49305 backedges. 24693 proven. 1477 refuted. 0 times theorem prover too weak. 23135 trivial. 0 not checked. [2023-11-29 03:41:43,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49305 backedges. 24693 proven. 1477 refuted. 0 times theorem prover too weak. 23135 trivial. 0 not checked. [2023-11-29 03:42:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675951423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:09,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:42:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 53, 53] total 72 [2023-11-29 03:42:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882419539] [2023-11-29 03:42:09,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:09,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 03:42:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 03:42:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=4645, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 03:42:09,618 INFO L87 Difference]: Start difference. First operand 786 states and 854 transitions. Second operand has 72 states, 72 states have (on average 2.25) internal successors, (162), 61 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:42:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:13,814 INFO L93 Difference]: Finished difference Result 1330 states and 1464 transitions. [2023-11-29 03:42:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-11-29 03:42:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.25) internal successors, (162), 61 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 730 [2023-11-29 03:42:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:13,819 INFO L225 Difference]: With dead ends: 1330 [2023-11-29 03:42:13,819 INFO L226 Difference]: Without dead ends: 786 [2023-11-29 03:42:13,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1669 GetRequests, 1421 SyntacticMatches, 51 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15014 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4874, Invalid=34528, Unknown=0, NotChecked=0, Total=39402 [2023-11-29 03:42:13,825 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 123 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 3840 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 3850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:13,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 699 Invalid, 3850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3840 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:42:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-29 03:42:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2023-11-29 03:42:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 763 states have (on average 1.0773263433813893) internal successors, (822), 763 states have internal predecessors, (822), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 03:42:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 845 transitions. [2023-11-29 03:42:13,934 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 845 transitions. Word has length 730 [2023-11-29 03:42:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:13,935 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 845 transitions. [2023-11-29 03:42:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.25) internal successors, (162), 61 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:42:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 845 transitions. [2023-11-29 03:42:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-11-29 03:42:13,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:13,942 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1] [2023-11-29 03:42:13,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:42:14,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:42:14,143 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:42:14,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2130451890, now seen corresponding path program 14 times [2023-11-29 03:42:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:14,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057860951] [2023-11-29 03:42:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:42:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:42:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 52010 backedges. 30462 proven. 513 refuted. 0 times theorem prover too weak. 21035 trivial. 0 not checked. [2023-11-29 03:42:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:21,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057860951] [2023-11-29 03:42:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057860951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588662183] [2023-11-29 03:42:21,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:21,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:21,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:42:21,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:21,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:21,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 03:42:21,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 52010 backedges. 29024 proven. 1971 refuted. 0 times theorem prover too weak. 21015 trivial. 0 not checked. [2023-11-29 03:42:22,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 52010 backedges. 29024 proven. 1971 refuted. 0 times theorem prover too weak. 21015 trivial. 0 not checked. [2023-11-29 03:42:53,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588662183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:53,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:42:53,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 58, 58] total 79 [2023-11-29 03:42:53,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256079772] [2023-11-29 03:42:53,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-11-29 03:42:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-11-29 03:42:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=5611, Unknown=0, NotChecked=0, Total=6162 [2023-11-29 03:42:53,318 INFO L87 Difference]: Start difference. First operand 786 states and 845 transitions. Second operand has 79 states, 79 states have (on average 2.2278481012658227) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 03:42:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:58,849 INFO L93 Difference]: Finished difference Result 1291 states and 1407 transitions. [2023-11-29 03:42:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-11-29 03:42:58,850 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.2278481012658227) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 745 [2023-11-29 03:42:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:58,855 INFO L225 Difference]: With dead ends: 1291 [2023-11-29 03:42:58,855 INFO L226 Difference]: Without dead ends: 786 [2023-11-29 03:42:58,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1727 GetRequests, 1443 SyntacticMatches, 56 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19956 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=6476, Invalid=46194, Unknown=0, NotChecked=0, Total=52670 [2023-11-29 03:42:58,861 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 138 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 5406 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 685 Invalid, 5417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5406 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 03:42:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-29 03:42:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2023-11-29 03:42:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 763 states have (on average 1.0668414154652688) internal successors, (814), 763 states have internal predecessors, (814), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 03:42:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 837 transitions. [2023-11-29 03:42:58,980 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 837 transitions. Word has length 745 [2023-11-29 03:42:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:58,981 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 837 transitions. [2023-11-29 03:42:58,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.2278481012658227) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 03:42:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 837 transitions. [2023-11-29 03:42:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-11-29 03:42:58,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:58,987 INFO L195 NwaCegarLoop]: trace histogram [181, 181, 181, 22, 21, 21, 21, 21, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1] [2023-11-29 03:42:58,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:42:59,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:42:59,188 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:42:59,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1147948262, now seen corresponding path program 15 times [2023-11-29 03:42:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927364953] [2023-11-29 03:42:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:43:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 54427 backedges. 32099 proven. 615 refuted. 0 times theorem prover too weak. 21713 trivial. 0 not checked. [2023-11-29 03:43:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927364953] [2023-11-29 03:43:07,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927364953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613295188] [2023-11-29 03:43:07,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:43:07,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:07,099 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:07,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:43:07,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2023-11-29 03:43:07,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:07,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 03:43:07,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 54427 backedges. 26684 proven. 10646 refuted. 0 times theorem prover too weak. 17097 trivial. 0 not checked. [2023-11-29 03:43:09,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 54427 backedges. 26684 proven. 10646 refuted. 0 times theorem prover too weak. 17097 trivial. 0 not checked. [2023-11-29 03:43:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613295188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:15,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:43:15,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 37, 37] total 121 [2023-11-29 03:43:15,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934277407] [2023-11-29 03:43:15,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2023-11-29 03:43:15,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2023-11-29 03:43:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=13116, Unknown=0, NotChecked=0, Total=14520 [2023-11-29 03:43:15,513 INFO L87 Difference]: Start difference. First operand 786 states and 837 transitions. Second operand has 121 states, 121 states have (on average 1.9421487603305785) internal successors, (235), 112 states have internal predecessors, (235), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 03:43:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:34,821 INFO L93 Difference]: Finished difference Result 2387 states and 2647 transitions. [2023-11-29 03:43:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 408 states. [2023-11-29 03:43:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.9421487603305785) internal successors, (235), 112 states have internal predecessors, (235), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 767 [2023-11-29 03:43:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:34,829 INFO L225 Difference]: With dead ends: 2387 [2023-11-29 03:43:34,829 INFO L226 Difference]: Without dead ends: 1536 [2023-11-29 03:43:34,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 1505 SyntacticMatches, 0 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97638 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=28158, Invalid=244848, Unknown=0, NotChecked=0, Total=273006 [2023-11-29 03:43:34,853 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3583 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3583 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:34,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3583 Valid, 662 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:43:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-11-29 03:43:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 957. [2023-11-29 03:43:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 932 states have (on average 1.0804721030042919) internal successors, (1007), 932 states have internal predecessors, (1007), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 03:43:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1032 transitions. [2023-11-29 03:43:35,152 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1032 transitions. Word has length 767 [2023-11-29 03:43:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:35,152 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1032 transitions. [2023-11-29 03:43:35,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.9421487603305785) internal successors, (235), 112 states have internal predecessors, (235), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 03:43:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1032 transitions. [2023-11-29 03:43:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-11-29 03:43:35,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:35,168 INFO L195 NwaCegarLoop]: trace histogram [237, 237, 237, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1] [2023-11-29 03:43:35,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:35,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:43:35,368 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:43:35,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2062750010, now seen corresponding path program 16 times [2023-11-29 03:43:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140514301] [2023-11-29 03:43:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:35,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:43:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:43:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 91227 backedges. 52352 proven. 726 refuted. 0 times theorem prover too weak. 38149 trivial. 0 not checked. [2023-11-29 03:43:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140514301] [2023-11-29 03:43:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140514301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38566513] [2023-11-29 03:43:47,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:43:47,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:47,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:47,999 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:48,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:43:49,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:43:49,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:49,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-29 03:43:49,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 91227 backedges. 52572 proven. 3265 refuted. 0 times theorem prover too weak. 35390 trivial. 0 not checked. [2023-11-29 03:43:50,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 91227 backedges. 52572 proven. 3265 refuted. 0 times theorem prover too weak. 35390 trivial. 0 not checked. [2023-11-29 03:44:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38566513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:44:39,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:44:39,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-11-29 03:44:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974045436] [2023-11-29 03:44:39,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:44:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-11-29 03:44:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-11-29 03:44:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-11-29 03:44:39,321 INFO L87 Difference]: Start difference. First operand 957 states and 1032 transitions. Second operand has 93 states, 93 states have (on average 2.193548387096774) internal successors, (204), 79 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 03:44:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:44:47,959 INFO L93 Difference]: Finished difference Result 1549 states and 1698 transitions. [2023-11-29 03:44:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-11-29 03:44:47,960 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.193548387096774) internal successors, (204), 79 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 947 [2023-11-29 03:44:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:44:47,964 INFO L225 Difference]: With dead ends: 1549 [2023-11-29 03:44:47,964 INFO L226 Difference]: Without dead ends: 960 [2023-11-29 03:44:47,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2198 GetRequests, 1836 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33197 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-11-29 03:44:47,972 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 157 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 7487 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 7500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 7487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:44:47,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 734 Invalid, 7500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 7487 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 03:44:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-29 03:44:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2023-11-29 03:44:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 935 states have (on average 1.0727272727272728) internal successors, (1003), 935 states have internal predecessors, (1003), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 03:44:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1028 transitions. [2023-11-29 03:44:48,182 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1028 transitions. Word has length 947 [2023-11-29 03:44:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:44:48,183 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1028 transitions. [2023-11-29 03:44:48,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.193548387096774) internal successors, (204), 79 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 03:44:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1028 transitions. [2023-11-29 03:44:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-11-29 03:44:48,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:44:48,196 INFO L195 NwaCegarLoop]: trace histogram [240, 240, 240, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1] [2023-11-29 03:44:48,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:44:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:48,397 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:44:48,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1287918807, now seen corresponding path program 17 times [2023-11-29 03:44:48,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:48,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180556091] [2023-11-29 03:44:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:44:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:44:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:44:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:44:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:44:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 93651 backedges. 54153 proven. 846 refuted. 0 times theorem prover too weak. 38652 trivial. 0 not checked. [2023-11-29 03:45:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180556091] [2023-11-29 03:45:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180556091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986627322] [2023-11-29 03:45:01,547 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:45:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:01,549 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:01,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:45:02,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2023-11-29 03:45:02,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:03,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 03:45:03,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 93651 backedges. 58119 proven. 4553 refuted. 0 times theorem prover too weak. 30979 trivial. 0 not checked. [2023-11-29 03:45:04,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 93651 backedges. 58751 proven. 3921 refuted. 0 times theorem prover too weak. 30979 trivial. 0 not checked. [2023-11-29 03:45:40,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986627322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:40,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:45:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 67, 67] total 96 [2023-11-29 03:45:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666152280] [2023-11-29 03:45:40,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 03:45:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 03:45:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=8268, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 03:45:40,390 INFO L87 Difference]: Start difference. First operand 960 states and 1028 transitions. Second operand has 96 states, 96 states have (on average 2.1458333333333335) internal successors, (206), 85 states have internal predecessors, (206), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:45:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:49,729 INFO L93 Difference]: Finished difference Result 1507 states and 1642 transitions. [2023-11-29 03:45:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2023-11-29 03:45:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.1458333333333335) internal successors, (206), 85 states have internal predecessors, (206), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 966 [2023-11-29 03:45:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:49,734 INFO L225 Difference]: With dead ends: 1507 [2023-11-29 03:45:49,734 INFO L226 Difference]: Without dead ends: 963 [2023-11-29 03:45:49,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2257 GetRequests, 1881 SyntacticMatches, 60 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35088 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=13355, Invalid=87451, Unknown=0, NotChecked=0, Total=100806 [2023-11-29 03:45:49,740 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 192 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 6537 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 6552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:49,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 750 Invalid, 6552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 6537 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 03:45:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-11-29 03:45:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2023-11-29 03:45:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 938 states have (on average 1.0660980810234542) internal successors, (1000), 938 states have internal predecessors, (1000), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 03:45:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1025 transitions. [2023-11-29 03:45:49,968 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1025 transitions. Word has length 966 [2023-11-29 03:45:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:49,969 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1025 transitions. [2023-11-29 03:45:49,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.1458333333333335) internal successors, (206), 85 states have internal predecessors, (206), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:45:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1025 transitions. [2023-11-29 03:45:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2023-11-29 03:45:49,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:49,980 INFO L195 NwaCegarLoop]: trace histogram [242, 242, 242, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1] [2023-11-29 03:45:49,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:45:50,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:50,181 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:45:50,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1464646179, now seen corresponding path program 18 times [2023-11-29 03:45:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:50,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140459753] [2023-11-29 03:45:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:45:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:57,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:45:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:46:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 94917 backedges. 64271 proven. 4890 refuted. 0 times theorem prover too weak. 25756 trivial. 0 not checked. [2023-11-29 03:46:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140459753] [2023-11-29 03:46:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140459753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889651305] [2023-11-29 03:46:13,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:46:13,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:13,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:13,892 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:13,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:46:15,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2023-11-29 03:46:15,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:15,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 03:46:15,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 94917 backedges. 41738 proven. 36429 refuted. 0 times theorem prover too weak. 16750 trivial. 0 not checked. [2023-11-29 03:46:17,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 94917 backedges. 41738 proven. 36429 refuted. 0 times theorem prover too weak. 16750 trivial. 0 not checked. [2023-11-29 03:46:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889651305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:39,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:46:39,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 50, 50] total 176 [2023-11-29 03:46:39,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146932927] [2023-11-29 03:46:39,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:39,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2023-11-29 03:46:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2023-11-29 03:46:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2443, Invalid=28357, Unknown=0, NotChecked=0, Total=30800 [2023-11-29 03:46:39,318 INFO L87 Difference]: Start difference. First operand 963 states and 1025 transitions. Second operand has 176 states, 176 states have (on average 2.1875) internal successors, (385), 146 states have internal predecessors, (385), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 03:48:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:06,933 INFO L93 Difference]: Finished difference Result 4691 states and 5223 transitions. [2023-11-29 03:48:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 919 states. [2023-11-29 03:48:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 2.1875) internal successors, (385), 146 states have internal predecessors, (385), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 962 [2023-11-29 03:48:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:06,944 INFO L225 Difference]: With dead ends: 4691 [2023-11-29 03:48:06,945 INFO L226 Difference]: Without dead ends: 3416 [2023-11-29 03:48:07,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2959 GetRequests, 1873 SyntacticMatches, 0 SemanticMatches, 1086 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490764 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=179696, Invalid=1002960, Unknown=0, NotChecked=0, Total=1182656 [2023-11-29 03:48:07,003 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3896 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3896 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 4187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:07,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3896 Valid, 1081 Invalid, 4187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 03:48:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2023-11-29 03:48:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 1530. [2023-11-29 03:48:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1497 states have (on average 1.0781563126252505) internal successors, (1614), 1497 states have internal predecessors, (1614), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-29 03:48:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1647 transitions. [2023-11-29 03:48:07,527 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1647 transitions. Word has length 962 [2023-11-29 03:48:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:07,528 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 1647 transitions. [2023-11-29 03:48:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 2.1875) internal successors, (385), 146 states have internal predecessors, (385), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 03:48:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1647 transitions. [2023-11-29 03:48:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1580 [2023-11-29 03:48:07,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:07,548 INFO L195 NwaCegarLoop]: trace histogram [415, 415, 415, 32, 31, 31, 31, 31, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1] [2023-11-29 03:48:07,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 03:48:07,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:48:07,749 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:48:07,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303462, now seen corresponding path program 19 times [2023-11-29 03:48:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460471007] [2023-11-29 03:48:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:48:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:48:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 274573 backedges. 152051 proven. 1113 refuted. 0 times theorem prover too weak. 121409 trivial. 0 not checked. [2023-11-29 03:48:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460471007] [2023-11-29 03:48:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460471007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724468179] [2023-11-29 03:48:54,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:48:54,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:54,325 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:54,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:48:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:56,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 3603 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 03:48:56,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 274573 backedges. 143320 proven. 6106 refuted. 0 times theorem prover too weak. 125147 trivial. 0 not checked. [2023-11-29 03:48:58,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:50:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 274573 backedges. 143320 proven. 6106 refuted. 0 times theorem prover too weak. 125147 trivial. 0 not checked. [2023-11-29 03:50:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724468179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:50:58,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:50:58,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2023-11-29 03:50:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411731425] [2023-11-29 03:50:58,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:50:58,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-11-29 03:50:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:50:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-11-29 03:50:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 03:50:58,992 INFO L87 Difference]: Start difference. First operand 1530 states and 1647 transitions. Second operand has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 03:51:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:51:13,107 INFO L93 Difference]: Finished difference Result 2557 states and 2793 transitions. [2023-11-29 03:51:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-11-29 03:51:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1579 [2023-11-29 03:51:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:51:13,113 INFO L225 Difference]: With dead ends: 2557 [2023-11-29 03:51:13,113 INFO L226 Difference]: Without dead ends: 1545 [2023-11-29 03:51:13,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3589 GetRequests, 3095 SyntacticMatches, 81 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63701 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2023-11-29 03:51:13,122 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 198 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 9970 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 9986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 9970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:51:13,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 952 Invalid, 9986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 9970 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 03:51:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2023-11-29 03:51:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2023-11-29 03:51:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1512 states have (on average 1.072089947089947) internal successors, (1621), 1512 states have internal predecessors, (1621), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-29 03:51:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1654 transitions. [2023-11-29 03:51:13,493 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1654 transitions. Word has length 1579 [2023-11-29 03:51:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:51:13,494 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 1654 transitions. [2023-11-29 03:51:13,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 03:51:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1654 transitions. [2023-11-29 03:51:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1595 [2023-11-29 03:51:13,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:51:13,512 INFO L195 NwaCegarLoop]: trace histogram [420, 420, 420, 32, 31, 31, 31, 31, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1] [2023-11-29 03:51:13,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:51:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:51:13,712 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 03:51:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:51:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1463561909, now seen corresponding path program 20 times [2023-11-29 03:51:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:51:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699321393] [2023-11-29 03:51:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:51:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:51:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:51:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:51:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:51:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 280973 backedges. 156753 proven. 1260 refuted. 0 times theorem prover too weak. 122960 trivial. 0 not checked. [2023-11-29 03:51:52,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:51:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699321393] [2023-11-29 03:51:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699321393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:51:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670767911] [2023-11-29 03:51:52,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:51:52,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:51:52,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:51:52,093 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:51:52,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ab90c5-210b-4708-b0ad-91d3490a7817/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:51:54,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:51:54,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:51:54,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 3638 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 03:51:54,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:51:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 280973 backedges. 158447 proven. 7329 refuted. 0 times theorem prover too weak. 115197 trivial. 0 not checked. [2023-11-29 03:51:56,676 INFO L327 TraceCheckSpWp]: Computing backward predicates...