./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:22,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:22,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 21:54:22,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:22,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:22,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:22,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:22,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:22,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:22,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:22,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:22,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:22,636 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:22,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:22,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:54:22,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:22,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:22,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:54:22,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:22,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:54:22,640 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:54:22,641 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:54:22,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:54:22,642 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:22,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:22,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:22,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:22,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:22,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:22,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:22,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:54:22,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:22,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:22,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:22,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:54:22,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:22,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:22,648 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:22,649 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_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2023-11-06 21:54:22,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:22,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:22,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:22,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:22,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:22,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-11-06 21:54:26,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:26,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:26,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-11-06 21:54:26,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/data/7682b7a39/37e7e7a8d6484f14a6107eb1473592f9/FLAGb7eef333b [2023-11-06 21:54:26,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/data/7682b7a39/37e7e7a8d6484f14a6107eb1473592f9 [2023-11-06 21:54:26,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:26,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:26,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:26,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:26,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:26,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689cbc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26, skipping insertion in model container [2023-11-06 21:54:26,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:26,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:26,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:26,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:26,727 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:26,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26 WrapperNode [2023-11-06 21:54:26,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:26,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:26,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:26,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:26,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,760 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-11-06 21:54:26,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:26,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:26,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:26,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:26,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:26,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:26,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:26,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:26,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (1/1) ... [2023-11-06 21:54:26,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:26,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:26,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-06 21:54:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-06 21:54:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:26,927 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:26,929 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:27,064 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:27,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:27,071 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:54:27,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:27 BoogieIcfgContainer [2023-11-06 21:54:27,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:27,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:27,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:27,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:27,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:26" (1/3) ... [2023-11-06 21:54:27,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa82ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:27, skipping insertion in model container [2023-11-06 21:54:27,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:26" (2/3) ... [2023-11-06 21:54:27,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa82ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:27, skipping insertion in model container [2023-11-06 21:54:27,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:27" (3/3) ... [2023-11-06 21:54:27,083 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2023-11-06 21:54:27,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:27,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 21:54:27,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:27,157 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f1b342f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:27,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 21:54:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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) [2023-11-06 21:54:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 21:54:27,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:27,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:27,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:27,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2023-11-06 21:54:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:27,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314017269] [2023-11-06 21:54:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:27,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:27,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314017269] [2023-11-06 21:54:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314017269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:27,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:27,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520678333] [2023-11-06 21:54:27,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:27,586 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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 2.0) internal successors, (6), 4 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) [2023-11-06 21:54:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:27,727 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2023-11-06 21:54:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2023-11-06 21:54:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:27,737 INFO L225 Difference]: With dead ends: 65 [2023-11-06 21:54:27,738 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 21:54:27,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:27,745 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:27,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 21:54:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-11-06 21:54:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 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) [2023-11-06 21:54:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-06 21:54:27,789 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-11-06 21:54:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:27,789 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-06 21:54:27,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2023-11-06 21:54:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-06 21:54:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:54:27,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:27,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:27,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:27,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:27,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2023-11-06 21:54:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96049989] [2023-11-06 21:54:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:27,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:27,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96049989] [2023-11-06 21:54:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96049989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530539285] [2023-11-06 21:54:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:27,896 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:27,941 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-11-06 21:54:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:54:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:27,943 INFO L225 Difference]: With dead ends: 34 [2023-11-06 21:54:27,943 INFO L226 Difference]: Without dead ends: 33 [2023-11-06 21:54:27,944 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 [2023-11-06 21:54:27,946 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:27,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-06 21:54:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-06 21:54:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 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) [2023-11-06 21:54:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-06 21:54:27,957 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-11-06 21:54:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:27,957 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-06 21:54:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-06 21:54:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:54:27,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:27,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:27,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:27,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1479083013, now seen corresponding path program 1 times [2023-11-06 21:54:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745483655] [2023-11-06 21:54:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745483655] [2023-11-06 21:54:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745483655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841254538] [2023-11-06 21:54:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:28,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:28,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:28,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:54:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:54:28,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:28,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841254538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:28,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-06 21:54:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027450057] [2023-11-06 21:54:28,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:54:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:54:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:54:28,300 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-06 21:54:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:28,378 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-11-06 21:54:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:54:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 12 [2023-11-06 21:54:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:28,381 INFO L225 Difference]: With dead ends: 39 [2023-11-06 21:54:28,381 INFO L226 Difference]: Without dead ends: 38 [2023-11-06 21:54:28,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:54:28,384 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 99 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:28,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 82 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-06 21:54:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-11-06 21:54:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) 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) [2023-11-06 21:54:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-06 21:54:28,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-11-06 21:54:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:28,396 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-06 21:54:28,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-06 21:54:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-06 21:54:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:54:28,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:28,398 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:28,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:28,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:28,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2023-11-06 21:54:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787600967] [2023-11-06 21:54:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:54:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787600967] [2023-11-06 21:54:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787600967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216065213] [2023-11-06 21:54:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:28,673 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2023-11-06 21:54:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:28,683 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-11-06 21:54:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2023-11-06 21:54:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:28,685 INFO L225 Difference]: With dead ends: 34 [2023-11-06 21:54:28,685 INFO L226 Difference]: Without dead ends: 33 [2023-11-06 21:54:28,686 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 [2023-11-06 21:54:28,687 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:28,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-06 21:54:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-11-06 21:54:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 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) [2023-11-06 21:54:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-11-06 21:54:28,698 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-11-06 21:54:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:28,698 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-11-06 21:54:28,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2023-11-06 21:54:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-06 21:54:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:54:28,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:28,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:28,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:28,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2023-11-06 21:54:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317919534] [2023-11-06 21:54:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:54:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317919534] [2023-11-06 21:54:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317919534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045447756] [2023-11-06 21:54:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:28,798 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2023-11-06 21:54:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:28,815 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-06 21:54:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2023-11-06 21:54:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:28,820 INFO L225 Difference]: With dead ends: 31 [2023-11-06 21:54:28,820 INFO L226 Difference]: Without dead ends: 30 [2023-11-06 21:54:28,822 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 [2023-11-06 21:54:28,826 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:28,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-06 21:54:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-06 21:54:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 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) [2023-11-06 21:54:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-06 21:54:28,840 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-11-06 21:54:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:28,841 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-06 21:54:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2023-11-06 21:54:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-06 21:54:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:54:28,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:28,842 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:28,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:28,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2023-11-06 21:54:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935402587] [2023-11-06 21:54:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:54:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935402587] [2023-11-06 21:54:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935402587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505403736] [2023-11-06 21:54:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:28,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:28,934 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 21:54:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:28,983 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-11-06 21:54:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2023-11-06 21:54:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:28,991 INFO L225 Difference]: With dead ends: 44 [2023-11-06 21:54:28,991 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 21:54:28,992 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 [2023-11-06 21:54:29,000 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 21:54:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-11-06 21:54:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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) [2023-11-06 21:54:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-06 21:54:29,014 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-11-06 21:54:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:29,015 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-06 21:54:29,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 21:54:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-06 21:54:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:54:29,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:29,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:29,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:29,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:29,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash 805408099, now seen corresponding path program 1 times [2023-11-06 21:54:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726613585] [2023-11-06 21:54:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:54:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726613585] [2023-11-06 21:54:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726613585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:29,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603602520] [2023-11-06 21:54:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:29,143 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 21:54:29,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:29,180 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-11-06 21:54:29,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:29,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2023-11-06 21:54:29,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:29,184 INFO L225 Difference]: With dead ends: 60 [2023-11-06 21:54:29,185 INFO L226 Difference]: Without dead ends: 38 [2023-11-06 21:54:29,186 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 [2023-11-06 21:54:29,189 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:29,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 74 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-06 21:54:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-06 21:54:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 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) [2023-11-06 21:54:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-06 21:54:29,198 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-11-06 21:54:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:29,198 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-06 21:54:29,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 21:54:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-06 21:54:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 21:54:29,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:29,204 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:29,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:29,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2023-11-06 21:54:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777961406] [2023-11-06 21:54:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 21:54:29,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:29,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777961406] [2023-11-06 21:54:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777961406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:29,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311856726] [2023-11-06 21:54:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:29,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:29,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:29,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:54:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:54:29,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 21:54:29,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311856726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:54:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-11-06 21:54:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159568533] [2023-11-06 21:54:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:29,564 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-06 21:54:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:29,601 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-11-06 21:54:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 28 [2023-11-06 21:54:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:29,603 INFO L225 Difference]: With dead ends: 38 [2023-11-06 21:54:29,603 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 21:54:29,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:54:29,605 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:29,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 21:54:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-06 21:54:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 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) [2023-11-06 21:54:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-11-06 21:54:29,615 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-11-06 21:54:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:29,619 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-11-06 21:54:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-06 21:54:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-11-06 21:54:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 21:54:29,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:29,623 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:29,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:29,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:29,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:29,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 903079569, now seen corresponding path program 1 times [2023-11-06 21:54:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877968711] [2023-11-06 21:54:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 21:54:29,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877968711] [2023-11-06 21:54:29,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877968711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140274195] [2023-11-06 21:54:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:29,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:29,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:29,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:29,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:54:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:29,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:54:29,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:54:30,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:54:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140274195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:30,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-11-06 21:54:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105115636] [2023-11-06 21:54:30,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:54:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:54:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:54:30,299 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 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) [2023-11-06 21:54:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:30,598 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-11-06 21:54:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 21:54:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 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 31 [2023-11-06 21:54:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:30,601 INFO L225 Difference]: With dead ends: 128 [2023-11-06 21:54:30,601 INFO L226 Difference]: Without dead ends: 91 [2023-11-06 21:54:30,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-11-06 21:54:30,603 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 52 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:30,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 172 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-06 21:54:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-11-06 21:54:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 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) [2023-11-06 21:54:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-11-06 21:54:30,619 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-11-06 21:54:30,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:30,620 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-11-06 21:54:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 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) [2023-11-06 21:54:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-11-06 21:54:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 21:54:30,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:30,624 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:30,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:30,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 21:54:30,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:30,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash 637811316, now seen corresponding path program 2 times [2023-11-06 21:54:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:30,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499131057] [2023-11-06 21:54:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:30,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:54:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-06 21:54:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:31,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499131057] [2023-11-06 21:54:31,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499131057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:31,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782238850] [2023-11-06 21:54:31,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:54:31,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:31,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:31,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:54:31,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:54:31,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:31,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:54:31,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-06 21:54:31,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-06 21:54:32,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782238850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:32,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:32,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 21 [2023-11-06 21:54:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58533845] [2023-11-06 21:54:32,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 21:54:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 21:54:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:54:32,997 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 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) [2023-11-06 21:54:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:33,301 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-11-06 21:54:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 21:54:33,301 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 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 82 [2023-11-06 21:54:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:33,303 INFO L225 Difference]: With dead ends: 145 [2023-11-06 21:54:33,303 INFO L226 Difference]: Without dead ends: 87 [2023-11-06 21:54:33,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 153 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 21:54:33,309 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:33,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 197 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-06 21:54:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-11-06 21:54:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 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) [2023-11-06 21:54:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-11-06 21:54:33,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 82 [2023-11-06 21:54:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:33,327 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-11-06 21:54:33,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 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) [2023-11-06 21:54:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-11-06 21:54:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-06 21:54:33,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:33,329 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:33,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:33,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:33,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1248438930, now seen corresponding path program 3 times [2023-11-06 21:54:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:33,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833487724] [2023-11-06 21:54:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 21:54:34,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833487724] [2023-11-06 21:54:34,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833487724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102437665] [2023-11-06 21:54:34,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:54:34,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:34,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:34,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:34,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:54:34,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 21:54:34,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:34,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:54:34,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-06 21:54:34,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-06 21:54:34,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102437665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:34,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-11-06 21:54:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411985542] [2023-11-06 21:54:34,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 21:54:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 21:54:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-11-06 21:54:34,653 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 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) [2023-11-06 21:54:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:35,268 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-11-06 21:54:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-06 21:54:35,269 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 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 98 [2023-11-06 21:54:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:35,274 INFO L225 Difference]: With dead ends: 154 [2023-11-06 21:54:35,274 INFO L226 Difference]: Without dead ends: 133 [2023-11-06 21:54:35,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-11-06 21:54:35,279 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 133 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:35,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 151 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-06 21:54:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-11-06 21:54:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 117 states have internal predecessors, (130), 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) [2023-11-06 21:54:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-11-06 21:54:35,310 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 98 [2023-11-06 21:54:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:35,311 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-11-06 21:54:35,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 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) [2023-11-06 21:54:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-11-06 21:54:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 21:54:35,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:35,314 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:35,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:35,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:35,520 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:35,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash 899953489, now seen corresponding path program 4 times [2023-11-06 21:54:35,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:35,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752503146] [2023-11-06 21:54:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-06 21:54:36,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752503146] [2023-11-06 21:54:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752503146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273516861] [2023-11-06 21:54:36,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:54:36,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:36,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:36,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:36,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:54:36,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:54:36,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:36,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 21:54:36,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-06 21:54:36,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-06 21:54:38,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273516861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:38,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:38,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2023-11-06 21:54:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791288220] [2023-11-06 21:54:38,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:38,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-06 21:54:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-06 21:54:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2023-11-06 21:54:38,885 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 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) [2023-11-06 21:54:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:39,274 INFO L93 Difference]: Finished difference Result 656 states and 740 transitions. [2023-11-06 21:54:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-06 21:54:39,275 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 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 133 [2023-11-06 21:54:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:39,282 INFO L225 Difference]: With dead ends: 656 [2023-11-06 21:54:39,283 INFO L226 Difference]: Without dead ends: 480 [2023-11-06 21:54:39,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 21:54:39,287 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:39,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 213 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-11-06 21:54:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 232. [2023-11-06 21:54:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 215 states have (on average 1.0930232558139534) internal successors, (235), 215 states have internal predecessors, (235), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 21:54:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2023-11-06 21:54:39,355 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 133 [2023-11-06 21:54:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:39,355 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2023-11-06 21:54:39,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 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) [2023-11-06 21:54:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2023-11-06 21:54:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-06 21:54:39,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:39,366 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:39,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 21:54:39,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:39,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:39,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -890562053, now seen corresponding path program 5 times [2023-11-06 21:54:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101105283] [2023-11-06 21:54:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 1761 proven. 51 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2023-11-06 21:54:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101105283] [2023-11-06 21:54:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101105283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309897352] [2023-11-06 21:54:41,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:54:41,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:41,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:41,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:41,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:54:41,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-06 21:54:41,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:41,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:54:41,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 1323 proven. 88 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2023-11-06 21:54:42,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 1341 proven. 70 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2023-11-06 21:54:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309897352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:44,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2023-11-06 21:54:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533830988] [2023-11-06 21:54:44,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 21:54:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 21:54:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-11-06 21:54:44,152 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:44,757 INFO L93 Difference]: Finished difference Result 496 states and 546 transitions. [2023-11-06 21:54:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 21:54:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 273 [2023-11-06 21:54:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:44,760 INFO L225 Difference]: With dead ends: 496 [2023-11-06 21:54:44,760 INFO L226 Difference]: Without dead ends: 303 [2023-11-06 21:54:44,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 552 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 21:54:44,764 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:44,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 254 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:54:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-06 21:54:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 290. [2023-11-06 21:54:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 270 states have (on average 1.0777777777777777) internal successors, (291), 270 states have internal predecessors, (291), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:54:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 311 transitions. [2023-11-06 21:54:44,800 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 311 transitions. Word has length 273 [2023-11-06 21:54:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:44,801 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 311 transitions. [2023-11-06 21:54:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:54:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 311 transitions. [2023-11-06 21:54:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-06 21:54:44,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:44,807 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:44,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:45,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:45,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:45,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1486677142, now seen corresponding path program 6 times [2023-11-06 21:54:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665995322] [2023-11-06 21:54:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1956 proven. 90 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2023-11-06 21:54:46,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665995322] [2023-11-06 21:54:46,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665995322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754207356] [2023-11-06 21:54:46,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 21:54:46,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:46,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:46,944 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:46,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:54:47,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-06 21:54:47,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:54:47,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:54:47,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-11-06 21:54:47,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-11-06 21:54:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754207356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:48,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:48,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2023-11-06 21:54:48,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537186932] [2023-11-06 21:54:48,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:48,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-06 21:54:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-06 21:54:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2023-11-06 21:54:48,419 INFO L87 Difference]: Start difference. First operand 290 states and 311 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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) [2023-11-06 21:54:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:51,642 INFO L93 Difference]: Finished difference Result 1234 states and 1405 transitions. [2023-11-06 21:54:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-06 21:54:51,643 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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 294 [2023-11-06 21:54:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:51,649 INFO L225 Difference]: With dead ends: 1234 [2023-11-06 21:54:51,650 INFO L226 Difference]: Without dead ends: 984 [2023-11-06 21:54:51,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2023-11-06 21:54:51,658 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 325 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:51,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 455 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:54:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-11-06 21:54:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 382. [2023-11-06 21:54:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 359 states have (on average 1.0807799442896935) internal successors, (388), 359 states have internal predecessors, (388), 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) [2023-11-06 21:54:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 411 transitions. [2023-11-06 21:54:51,721 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 411 transitions. Word has length 294 [2023-11-06 21:54:51,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:51,722 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 411 transitions. [2023-11-06 21:54:51,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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) [2023-11-06 21:54:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 411 transitions. [2023-11-06 21:54:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-11-06 21:54:51,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:51,730 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:51,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 21:54:51,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:51,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:54:51,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1005785761, now seen corresponding path program 7 times [2023-11-06 21:54:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635767495] [2023-11-06 21:54:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:54:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3720 proven. 138 refuted. 0 times theorem prover too weak. 2878 trivial. 0 not checked. [2023-11-06 21:54:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635767495] [2023-11-06 21:54:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635767495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578672205] [2023-11-06 21:54:54,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 21:54:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:54,662 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:54,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:54:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:54,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 21:54:54,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2023-11-06 21:54:55,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2023-11-06 21:55:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578672205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:03,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-11-06 21:55:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965229350] [2023-11-06 21:55:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-06 21:55:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-06 21:55:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 21:55:03,448 INFO L87 Difference]: Start difference. First operand 382 states and 411 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-11-06 21:55:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:05,396 INFO L93 Difference]: Finished difference Result 791 states and 853 transitions. [2023-11-06 21:55:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-06 21:55:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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 333 [2023-11-06 21:55:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:05,400 INFO L225 Difference]: With dead ends: 791 [2023-11-06 21:55:05,400 INFO L226 Difference]: Without dead ends: 523 [2023-11-06 21:55:05,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 645 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-11-06 21:55:05,406 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:05,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 469 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 21:55:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-06 21:55:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 471. [2023-11-06 21:55:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 444 states have (on average 1.0698198198198199) internal successors, (475), 444 states have internal predecessors, (475), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 21:55:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 502 transitions. [2023-11-06 21:55:05,489 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 502 transitions. Word has length 333 [2023-11-06 21:55:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 502 transitions. [2023-11-06 21:55:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-11-06 21:55:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 502 transitions. [2023-11-06 21:55:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-06 21:55:05,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:05,499 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:05,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 21:55:05,706 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:55:05,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1028513830, now seen corresponding path program 8 times [2023-11-06 21:55:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692045376] [2023-11-06 21:55:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4322 proven. 195 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-11-06 21:55:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692045376] [2023-11-06 21:55:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692045376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268339022] [2023-11-06 21:55:08,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:55:08,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:08,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:08,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:08,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:55:08,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:55:08,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:08,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 21:55:08,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-11-06 21:55:09,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-11-06 21:55:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268339022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:19,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:19,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2023-11-06 21:55:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464723404] [2023-11-06 21:55:19,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-06 21:55:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-06 21:55:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 21:55:19,973 INFO L87 Difference]: Start difference. First operand 471 states and 502 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:55:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:22,522 INFO L93 Difference]: Finished difference Result 962 states and 1025 transitions. [2023-11-06 21:55:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-06 21:55:22,522 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 348 [2023-11-06 21:55:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:22,527 INFO L225 Difference]: With dead ends: 962 [2023-11-06 21:55:22,527 INFO L226 Difference]: Without dead ends: 670 [2023-11-06 21:55:22,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 667 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2023-11-06 21:55:22,536 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:22,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 501 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:55:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-06 21:55:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 590. [2023-11-06 21:55:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 558 states have (on average 1.060931899641577) internal successors, (592), 558 states have internal predecessors, (592), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-06 21:55:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 624 transitions. [2023-11-06 21:55:22,666 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 624 transitions. Word has length 348 [2023-11-06 21:55:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 624 transitions. [2023-11-06 21:55:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:55:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 624 transitions. [2023-11-06 21:55:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-06 21:55:22,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:22,674 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:22,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:22,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:55:22,882 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:55:22,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash -264518770, now seen corresponding path program 9 times [2023-11-06 21:55:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750100538] [2023-11-06 21:55:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:55:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 4863 proven. 261 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2023-11-06 21:55:25,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750100538] [2023-11-06 21:55:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750100538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488574314] [2023-11-06 21:55:25,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:55:25,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:25,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:25,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:55:26,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-06 21:55:26,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:26,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 21:55:26,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6503 trivial. 0 not checked. [2023-11-06 21:55:26,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8388 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6503 trivial. 0 not checked. [2023-11-06 21:55:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488574314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:28,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2023-11-06 21:55:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455398606] [2023-11-06 21:55:28,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-11-06 21:55:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-11-06 21:55:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2023-11-06 21:55:28,056 INFO L87 Difference]: Start difference. First operand 590 states and 624 transitions. Second operand has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:55:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:31,500 INFO L93 Difference]: Finished difference Result 1758 states and 1973 transitions. [2023-11-06 21:55:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-06 21:55:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 350 [2023-11-06 21:55:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:31,510 INFO L225 Difference]: With dead ends: 1758 [2023-11-06 21:55:31,510 INFO L226 Difference]: Without dead ends: 1438 [2023-11-06 21:55:31,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2023-11-06 21:55:31,520 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 561 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:31,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 551 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:55:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-11-06 21:55:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 805. [2023-11-06 21:55:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 767 states have (on average 1.0625814863102998) internal successors, (815), 767 states have internal predecessors, (815), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-06 21:55:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 853 transitions. [2023-11-06 21:55:31,721 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 853 transitions. Word has length 350 [2023-11-06 21:55:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 853 transitions. [2023-11-06 21:55:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:55:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 853 transitions. [2023-11-06 21:55:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-06 21:55:31,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:31,729 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:31,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:55:31,937 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:55:31,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1263462439, now seen corresponding path program 10 times [2023-11-06 21:55:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228369594] [2023-11-06 21:55:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 6995 proven. 336 refuted. 0 times theorem prover too weak. 4212 trivial. 0 not checked. [2023-11-06 21:55:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228369594] [2023-11-06 21:55:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228369594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412988587] [2023-11-06 21:55:34,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:55:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:34,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:34,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:55:35,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:55:35,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:35,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 21:55:35,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2865 trivial. 0 not checked. [2023-11-06 21:55:36,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11543 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2865 trivial. 0 not checked. [2023-11-06 21:55:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412988587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:50,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:55:50,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2023-11-06 21:55:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246710876] [2023-11-06 21:55:50,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-06 21:55:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-06 21:55:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2023-11-06 21:55:50,782 INFO L87 Difference]: Start difference. First operand 805 states and 853 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 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) [2023-11-06 21:55:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:55,632 INFO L93 Difference]: Finished difference Result 1556 states and 1644 transitions. [2023-11-06 21:55:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-11-06 21:55:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 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 399 [2023-11-06 21:55:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:55,640 INFO L225 Difference]: With dead ends: 1556 [2023-11-06 21:55:55,640 INFO L226 Difference]: Without dead ends: 1156 [2023-11-06 21:55:55,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 753 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2023-11-06 21:55:55,649 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:55,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 600 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 21:55:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-11-06 21:55:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1002. [2023-11-06 21:55:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 957 states have (on average 1.0553814002089865) internal successors, (1010), 957 states have internal predecessors, (1010), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-06 21:55:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1055 transitions. [2023-11-06 21:55:55,962 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1055 transitions. Word has length 399 [2023-11-06 21:55:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:55,963 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1055 transitions. [2023-11-06 21:55:55,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 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) [2023-11-06 21:55:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1055 transitions. [2023-11-06 21:55:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-06 21:55:55,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:55,972 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:55,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:55:56,182 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:55:56,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -24504735, now seen corresponding path program 11 times [2023-11-06 21:55:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441676142] [2023-11-06 21:55:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:55:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:55:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 6823 proven. 420 refuted. 0 times theorem prover too weak. 4670 trivial. 0 not checked. [2023-11-06 21:55:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441676142] [2023-11-06 21:55:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441676142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419719633] [2023-11-06 21:55:58,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:55:58,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:58,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:58,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:58,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:55:59,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-11-06 21:55:59,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:59,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 21:55:59,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8269 proven. 1615 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-11-06 21:56:00,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8455 proven. 1429 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-11-06 21:56:10,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419719633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:56:10,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:56:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2023-11-06 21:56:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445756949] [2023-11-06 21:56:10,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:56:10,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-06 21:56:10,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-06 21:56:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2023-11-06 21:56:10,277 INFO L87 Difference]: Start difference. First operand 1002 states and 1055 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:56:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:15,363 INFO L93 Difference]: Finished difference Result 1874 states and 1967 transitions. [2023-11-06 21:56:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-11-06 21:56:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 395 [2023-11-06 21:56:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:15,372 INFO L225 Difference]: With dead ends: 1874 [2023-11-06 21:56:15,373 INFO L226 Difference]: Without dead ends: 1450 [2023-11-06 21:56:15,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 747 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2023-11-06 21:56:15,382 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 124 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 658 Invalid, 3646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3630 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:56:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-06 21:56:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1250. [2023-11-06 21:56:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1197 states have (on average 1.050125313283208) internal successors, (1257), 1197 states have internal predecessors, (1257), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-06 21:56:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1310 transitions. [2023-11-06 21:56:15,710 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1310 transitions. Word has length 395 [2023-11-06 21:56:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:15,711 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1310 transitions. [2023-11-06 21:56:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:56:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1310 transitions. [2023-11-06 21:56:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-06 21:56:15,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:15,720 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:15,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:56:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:15,927 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:56:15,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 745880795, now seen corresponding path program 12 times [2023-11-06 21:56:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98618224] [2023-11-06 21:56:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:56:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 9020 proven. 1914 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2023-11-06 21:56:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98618224] [2023-11-06 21:56:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98618224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819148683] [2023-11-06 21:56:21,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 21:56:21,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:21,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:56:21,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 21:56:22,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-11-06 21:56:22,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:56:22,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 21:56:22,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-11-06 21:56:23,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-11-06 21:56:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819148683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:56:38,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:56:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2023-11-06 21:56:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589932960] [2023-11-06 21:56:38,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:56:38,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-06 21:56:38,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-06 21:56:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2023-11-06 21:56:38,576 INFO L87 Difference]: Start difference. First operand 1250 states and 1310 transitions. Second operand has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 21:57:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:19,939 INFO L93 Difference]: Finished difference Result 4282 states and 4549 transitions. [2023-11-06 21:57:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-11-06 21:57:19,940 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 411 [2023-11-06 21:57:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:19,960 INFO L225 Difference]: With dead ends: 4282 [2023-11-06 21:57:19,960 INFO L226 Difference]: Without dead ends: 3484 [2023-11-06 21:57:20,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2023-11-06 21:57:20,031 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1325 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:20,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1281 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 21:57:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2023-11-06 21:57:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2786. [2023-11-06 21:57:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2677 states have (on average 1.0429585356742623) internal successors, (2792), 2677 states have internal predecessors, (2792), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2023-11-06 21:57:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 2901 transitions. [2023-11-06 21:57:20,707 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 2901 transitions. Word has length 411 [2023-11-06 21:57:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:20,708 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 2901 transitions. [2023-11-06 21:57:20,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 21:57:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 2901 transitions. [2023-11-06 21:57:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2023-11-06 21:57:20,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:20,728 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:20,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:20,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:20,937 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:57:20,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash -323989141, now seen corresponding path program 13 times [2023-11-06 21:57:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948297313] [2023-11-06 21:57:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:20,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 21:57:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:29,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 67307 backedges. 1222 proven. 6 refuted. 0 times theorem prover too weak. 66079 trivial. 0 not checked. [2023-11-06 21:57:31,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948297313] [2023-11-06 21:57:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948297313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124235437] [2023-11-06 21:57:31,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 21:57:31,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:31,119 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:31,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 21:57:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:32,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:57:32,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 67307 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66079 trivial. 0 not checked. [2023-11-06 21:57:32,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 67307 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66079 trivial. 0 not checked. [2023-11-06 21:57:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124235437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:33,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:33,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2023-11-06 21:57:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759155636] [2023-11-06 21:57:33,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:57:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:57:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:33,784 INFO L87 Difference]: Start difference. First operand 2786 states and 2901 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:57:34,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:34,265 INFO L93 Difference]: Finished difference Result 4071 states and 4238 transitions. [2023-11-06 21:57:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:57:34,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 851 [2023-11-06 21:57:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:34,276 INFO L225 Difference]: With dead ends: 4071 [2023-11-06 21:57:34,276 INFO L226 Difference]: Without dead ends: 2037 [2023-11-06 21:57:34,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1754 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:57:34,288 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:34,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-11-06 21:57:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-11-06 21:57:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1959 states have (on average 1.0423685553854007) internal successors, (2042), 1959 states have internal predecessors, (2042), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2023-11-06 21:57:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2120 transitions. [2023-11-06 21:57:34,809 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2120 transitions. Word has length 851 [2023-11-06 21:57:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:34,809 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2120 transitions. [2023-11-06 21:57:34,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:57:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2120 transitions. [2023-11-06 21:57:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2023-11-06 21:57:34,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:34,825 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:34,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:35,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 21:57:35,037 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:57:35,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1849584274, now seen corresponding path program 14 times [2023-11-06 21:57:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:35,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603872349] [2023-11-06 21:57:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:35,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:57:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2785 proven. 30 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-11-06 21:57:46,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603872349] [2023-11-06 21:57:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603872349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448853533] [2023-11-06 21:57:46,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:57:46,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:46,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:46,791 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 21:57:47,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:57:47,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:57:47,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:57:47,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-11-06 21:57:47,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-11-06 21:57:50,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448853533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:50,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2023-11-06 21:57:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496121516] [2023-11-06 21:57:50,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 21:57:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 21:57:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:57:50,702 INFO L87 Difference]: Start difference. First operand 2037 states and 2120 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 21:57:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:51,026 INFO L93 Difference]: Finished difference Result 2624 states and 2730 transitions. [2023-11-06 21:57:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:57:51,028 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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 878 [2023-11-06 21:57:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:51,035 INFO L225 Difference]: With dead ends: 2624 [2023-11-06 21:57:51,035 INFO L226 Difference]: Without dead ends: 1339 [2023-11-06 21:57:51,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1843 GetRequests, 1805 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-11-06 21:57:51,041 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:51,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 156 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:57:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-11-06 21:57:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-11-06 21:57:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1290 states have (on average 1.0410852713178294) internal successors, (1343), 1290 states have internal predecessors, (1343), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-06 21:57:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1392 transitions. [2023-11-06 21:57:51,301 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1392 transitions. Word has length 878 [2023-11-06 21:57:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:51,302 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1392 transitions. [2023-11-06 21:57:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 21:57:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1392 transitions. [2023-11-06 21:57:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2023-11-06 21:57:51,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:51,315 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:51,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:51,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 21:57:51,525 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:57:51,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1453723992, now seen corresponding path program 15 times [2023-11-06 21:57:51,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:51,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419448192] [2023-11-06 21:57:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:51,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:57:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 23418 proven. 615 refuted. 0 times theorem prover too weak. 47589 trivial. 0 not checked. [2023-11-06 21:57:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419448192] [2023-11-06 21:57:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419448192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262016579] [2023-11-06 21:57:59,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:57:59,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:59,296 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:59,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a026b986-5d15-4d04-a8c7-b46f92909564/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process