./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy2-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a611c66c14ab07fcb466e336a12a38ea58a5e4dd276e08fd17165595fe5eadfb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:43,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:43,311 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 22:22:43,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:43,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:43,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:43,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:43,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:43,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:22:43,350 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:22:43,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:43,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:43,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:43,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:43,354 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:43,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:43,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:22:43,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:43,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:43,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:22:43,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:43,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:22:43,363 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:22:43,363 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:22:43,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:22:43,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:43,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:43,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:43,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:22:43,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:43,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:43,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:43,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:43,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:22:43,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:22:43,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:22:43,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:43,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:43,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:22:43,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:43,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:43,391 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_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a611c66c14ab07fcb466e336a12a38ea58a5e4dd276e08fd17165595fe5eadfb [2023-11-21 22:22:43,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:43,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:43,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:43,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:43,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:43,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-crafted/easy2-1.c [2023-11-21 22:22:46,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:47,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:47,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/sv-benchmarks/c/termination-crafted/easy2-1.c [2023-11-21 22:22:47,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/data/bcd01d1ac/8d2a2c160fce482ab5c0635f0e43a166/FLAGa52d9dee0 [2023-11-21 22:22:47,128 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/data/bcd01d1ac/8d2a2c160fce482ab5c0635f0e43a166 [2023-11-21 22:22:47,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:47,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:47,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:47,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:47,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:47,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdb1473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47, skipping insertion in model container [2023-11-21 22:22:47,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:47,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:47,326 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:22:47,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:47,366 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:22:47,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47 WrapperNode [2023-11-21 22:22:47,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:47,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:47,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:22:47,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:22:47,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,402 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-11-21 22:22:47,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:47,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:22:47,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:22:47,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:22:47,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,421 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,426 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:22:47,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:22:47,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:22:47,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:22:47,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:22:47,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (1/1) ... [2023-11-21 22:22:47,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:47,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:47,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:22:47,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:22:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:22:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:22:47,656 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:22:47,658 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:22:47,822 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:22:47,856 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:22:47,856 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:22:47,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:47 BoogieIcfgContainer [2023-11-21 22:22:47,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:22:47,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:22:47,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:22:47,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:22:47,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:22:47" (1/3) ... [2023-11-21 22:22:47,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc62114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:47, skipping insertion in model container [2023-11-21 22:22:47,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:47" (2/3) ... [2023-11-21 22:22:47,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc62114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:47, skipping insertion in model container [2023-11-21 22:22:47,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:47" (3/3) ... [2023-11-21 22:22:47,868 INFO L112 eAbstractionObserver]: Analyzing ICFG easy2-1.c [2023-11-21 22:22:47,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:22:47,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:22:47,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:47,951 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47801ea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:47,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:22:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:22:47,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:47,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:22:47,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2023-11-21 22:22:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551400803] [2023-11-21 22:22:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551400803] [2023-11-21 22:22:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551400803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:22:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089069177] [2023-11-21 22:22:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,249 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,280 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-21 22:22:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 22:22:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,292 INFO L225 Difference]: With dead ends: 15 [2023-11-21 22:22:48,292 INFO L226 Difference]: Without dead ends: 13 [2023-11-21 22:22:48,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,302 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-21 22:22:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-21 22:22:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-21 22:22:48,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2023-11-21 22:22:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,346 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-21 22:22:48,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-21 22:22:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:22:48,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:22:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:22:48,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2023-11-21 22:22:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422183083] [2023-11-21 22:22:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422183083] [2023-11-21 22:22:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422183083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:22:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873128112] [2023-11-21 22:22:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,415 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,431 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-21 22:22:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 22:22:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,433 INFO L225 Difference]: With dead ends: 17 [2023-11-21 22:22:48,433 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 22:22:48,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,436 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 22:22:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 22:22:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-21 22:22:48,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2023-11-21 22:22:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,444 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-21 22:22:48,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-21 22:22:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:22:48,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:22:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:22:48,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2023-11-21 22:22:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930451987] [2023-11-21 22:22:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930451987] [2023-11-21 22:22:48,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930451987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:22:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373333945] [2023-11-21 22:22:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,504 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,524 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-21 22:22:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 22:22:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,526 INFO L225 Difference]: With dead ends: 19 [2023-11-21 22:22:48,526 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 22:22:48,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,529 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 22:22:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-11-21 22:22:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-21 22:22:48,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2023-11-21 22:22:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,536 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-21 22:22:48,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-21 22:22:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:22:48,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:22:48,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:22:48,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2023-11-21 22:22:48,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943125661] [2023-11-21 22:22:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943125661] [2023-11-21 22:22:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943125661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:22:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138868900] [2023-11-21 22:22:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,587 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,599 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-21 22:22:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:22:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,601 INFO L225 Difference]: With dead ends: 17 [2023-11-21 22:22:48,602 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 22:22:48,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,604 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 22:22:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 22:22:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-21 22:22:48,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2023-11-21 22:22:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,612 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-21 22:22:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-21 22:22:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:22:48,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:48,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:22:48,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2023-11-21 22:22:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099122190] [2023-11-21 22:22:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099122190] [2023-11-21 22:22:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099122190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:22:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830984896] [2023-11-21 22:22:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,667 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,681 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-21 22:22:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 22:22:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,683 INFO L225 Difference]: With dead ends: 16 [2023-11-21 22:22:48,684 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 22:22:48,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,686 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 22:22:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-21 22:22:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-21 22:22:48,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2023-11-21 22:22:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,693 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-21 22:22:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-21 22:22:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:22:48,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:22:48,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2023-11-21 22:22:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446461568] [2023-11-21 22:22:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446461568] [2023-11-21 22:22:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446461568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:48,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:48,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:22:48,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395775816] [2023-11-21 22:22:48,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:48,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:22:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:48,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:22:48,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,744 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:48,754 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-21 22:22:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:22:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 22:22:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:48,756 INFO L225 Difference]: With dead ends: 15 [2023-11-21 22:22:48,756 INFO L226 Difference]: Without dead ends: 14 [2023-11-21 22:22:48,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:22:48,758 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:48,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-21 22:22:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-21 22:22:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-21 22:22:48,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2023-11-21 22:22:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:48,765 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-21 22:22:48,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-21 22:22:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:22:48,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:48,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:48,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:22:48,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:48,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1711517210, now seen corresponding path program 1 times [2023-11-21 22:22:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434699638] [2023-11-21 22:22:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434699638] [2023-11-21 22:22:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434699638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200998881] [2023-11-21 22:22:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:48,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:48,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:48,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:48,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:22:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:48,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:22:48,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:48,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200998881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:49,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-21 22:22:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170101562] [2023-11-21 22:22:49,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:49,044 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:49,079 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2023-11-21 22:22:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:49,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 22:22:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:49,081 INFO L225 Difference]: With dead ends: 37 [2023-11-21 22:22:49,081 INFO L226 Difference]: Without dead ends: 36 [2023-11-21 22:22:49,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:49,083 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-21 22:22:49,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2023-11-21 22:22:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2023-11-21 22:22:49,093 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2023-11-21 22:22:49,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:49,093 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2023-11-21 22:22:49,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2023-11-21 22:22:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:22:49,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:49,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:49,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:22:49,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:49,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:49,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1517426005, now seen corresponding path program 1 times [2023-11-21 22:22:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:49,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476125676] [2023-11-21 22:22:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476125676] [2023-11-21 22:22:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476125676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305591194] [2023-11-21 22:22:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:49,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:49,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:49,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:49,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:22:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:49,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:22:49,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:49,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305591194] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:49,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:49,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-21 22:22:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512216462] [2023-11-21 22:22:49,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:49,610 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:49,638 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-11-21 22:22:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:49,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 22:22:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:49,640 INFO L225 Difference]: With dead ends: 36 [2023-11-21 22:22:49,640 INFO L226 Difference]: Without dead ends: 35 [2023-11-21 22:22:49,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:49,642 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:49,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-21 22:22:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-21 22:22:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2023-11-21 22:22:49,657 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2023-11-21 22:22:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:49,657 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2023-11-21 22:22:49,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2023-11-21 22:22:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 22:22:49,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:49,659 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1] [2023-11-21 22:22:49,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:49,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:49,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:49,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -722565875, now seen corresponding path program 2 times [2023-11-21 22:22:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:49,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739150140] [2023-11-21 22:22:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:50,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739150140] [2023-11-21 22:22:50,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739150140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838518315] [2023-11-21 22:22:50,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:22:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:50,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:50,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:22:50,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:22:50,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:50,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:22:50,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:50,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838518315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:50,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:50,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 22:22:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175141736] [2023-11-21 22:22:50,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:50,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:22:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:22:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:50,378 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:50,450 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2023-11-21 22:22:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:22:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-21 22:22:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:50,456 INFO L225 Difference]: With dead ends: 82 [2023-11-21 22:22:50,456 INFO L226 Difference]: Without dead ends: 81 [2023-11-21 22:22:50,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:50,462 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:50,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-21 22:22:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2023-11-21 22:22:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2023-11-21 22:22:50,478 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2023-11-21 22:22:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:50,479 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2023-11-21 22:22:50,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2023-11-21 22:22:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:22:50,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:50,486 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1] [2023-11-21 22:22:50,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-21 22:22:50,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:50,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -924705598, now seen corresponding path program 2 times [2023-11-21 22:22:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463359440] [2023-11-21 22:22:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:50,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:50,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463359440] [2023-11-21 22:22:50,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463359440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594414611] [2023-11-21 22:22:50,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:22:50,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:50,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:50,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:22:50,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:22:50,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:50,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:22:50,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:50,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594414611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:51,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 22:22:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915258797] [2023-11-21 22:22:51,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:51,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:22:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:22:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:51,083 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:51,129 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-11-21 22:22:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:22:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-21 22:22:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:51,131 INFO L225 Difference]: With dead ends: 78 [2023-11-21 22:22:51,131 INFO L226 Difference]: Without dead ends: 77 [2023-11-21 22:22:51,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:51,132 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:51,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:22:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-21 22:22:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-21 22:22:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2023-11-21 22:22:51,143 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 33 [2023-11-21 22:22:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:51,143 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2023-11-21 22:22:51,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2023-11-21 22:22:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-21 22:22:51,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:51,147 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1] [2023-11-21 22:22:51,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:22:51,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:51,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1320088787, now seen corresponding path program 3 times [2023-11-21 22:22:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:51,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52800607] [2023-11-21 22:22:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52800607] [2023-11-21 22:22:51,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52800607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:51,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811860853] [2023-11-21 22:22:51,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:22:51,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:51,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:51,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:51,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:22:51,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-21 22:22:51,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:51,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:22:51,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:51,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811860853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:52,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-21 22:22:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660736384] [2023-11-21 22:22:52,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:22:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:52,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:22:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:22:52,294 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:52,395 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2023-11-21 22:22:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 22:22:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-21 22:22:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:52,400 INFO L225 Difference]: With dead ends: 172 [2023-11-21 22:22:52,400 INFO L226 Difference]: Without dead ends: 171 [2023-11-21 22:22:52,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:22:52,402 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:52,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 133 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:22:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-21 22:22:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2023-11-21 22:22:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0822784810126582) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2023-11-21 22:22:52,436 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 74 [2023-11-21 22:22:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:52,438 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2023-11-21 22:22:52,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2023-11-21 22:22:52,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-21 22:22:52,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:52,445 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1] [2023-11-21 22:22:52,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:52,660 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:52,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2026920610, now seen corresponding path program 3 times [2023-11-21 22:22:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881866369] [2023-11-21 22:22:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:52,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881866369] [2023-11-21 22:22:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881866369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681349119] [2023-11-21 22:22:52,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:22:52,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:52,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:52,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:52,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:22:52,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-21 22:22:52,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:52,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:22:52,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:53,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681349119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:53,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-21 22:22:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123154258] [2023-11-21 22:22:53,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:53,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:22:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:22:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:22:53,447 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:53,538 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2023-11-21 22:22:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 22:22:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-21 22:22:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:53,540 INFO L225 Difference]: With dead ends: 162 [2023-11-21 22:22:53,540 INFO L226 Difference]: Without dead ends: 161 [2023-11-21 22:22:53,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:22:53,542 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:53,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:22:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-21 22:22:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-21 22:22:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2023-11-21 22:22:53,555 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 75 [2023-11-21 22:22:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:53,555 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2023-11-21 22:22:53,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2023-11-21 22:22:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-21 22:22:53,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:53,558 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1] [2023-11-21 22:22:53,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:53,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:53,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1637556077, now seen corresponding path program 4 times [2023-11-21 22:22:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820257765] [2023-11-21 22:22:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:54,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820257765] [2023-11-21 22:22:54,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820257765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763812272] [2023-11-21 22:22:54,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:22:54,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:54,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:54,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:22:54,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:22:54,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:54,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:22:54,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:55,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763812272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:56,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:56,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-21 22:22:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803665452] [2023-11-21 22:22:56,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:56,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-21 22:22:56,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-21 22:22:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:22:56,334 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:56,566 INFO L93 Difference]: Finished difference Result 352 states and 375 transitions. [2023-11-21 22:22:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-21 22:22:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-11-21 22:22:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:56,569 INFO L225 Difference]: With dead ends: 352 [2023-11-21 22:22:56,570 INFO L226 Difference]: Without dead ends: 351 [2023-11-21 22:22:56,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:22:56,572 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 65 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:56,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 263 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:22:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-21 22:22:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 328. [2023-11-21 22:22:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 1.0766871165644172) internal successors, (351), 327 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 351 transitions. [2023-11-21 22:22:56,590 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 351 transitions. Word has length 158 [2023-11-21 22:22:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:56,591 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 351 transitions. [2023-11-21 22:22:56,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 351 transitions. [2023-11-21 22:22:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-21 22:22:56,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:56,593 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1] [2023-11-21 22:22:56,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-21 22:22:56,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:22:56,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:56,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash -775369118, now seen corresponding path program 4 times [2023-11-21 22:22:56,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:56,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298918208] [2023-11-21 22:22:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:56,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:57,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298918208] [2023-11-21 22:22:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298918208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622581805] [2023-11-21 22:22:57,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:22:57,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:57,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:57,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:57,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:22:57,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:22:57,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:57,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:22:57,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:57,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622581805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:58,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:58,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-21 22:22:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599140130] [2023-11-21 22:22:58,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:58,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-21 22:22:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-21 22:22:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:22:58,991 INFO L87 Difference]: Start difference. First operand 328 states and 351 transitions. Second operand has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:59,183 INFO L93 Difference]: Finished difference Result 330 states and 353 transitions. [2023-11-21 22:22:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-21 22:22:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2023-11-21 22:22:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:59,186 INFO L225 Difference]: With dead ends: 330 [2023-11-21 22:22:59,186 INFO L226 Difference]: Without dead ends: 329 [2023-11-21 22:22:59,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:22:59,188 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:59,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 243 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:22:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-21 22:22:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-11-21 22:22:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 328 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2023-11-21 22:22:59,206 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2023-11-21 22:22:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:59,207 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2023-11-21 22:22:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2023-11-21 22:22:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-11-21 22:22:59,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:59,215 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1] [2023-11-21 22:22:59,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:59,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 22:22:59,436 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:22:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 79390701, now seen corresponding path program 5 times [2023-11-21 22:22:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969221334] [2023-11-21 22:22:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969221334] [2023-11-21 22:23:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969221334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083119403] [2023-11-21 22:23:02,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 22:23:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:23:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:02,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:23:02,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:23:02,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-21 22:23:02,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:23:02,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 22:23:02,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:23:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:03,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:23:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:06,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083119403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:23:06,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:23:06,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-21 22:23:06,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705667865] [2023-11-21 22:23:06,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:23:06,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-21 22:23:06,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-21 22:23:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 22:23:06,877 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:07,530 INFO L93 Difference]: Finished difference Result 712 states and 759 transitions. [2023-11-21 22:23:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-21 22:23:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2023-11-21 22:23:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:07,535 INFO L225 Difference]: With dead ends: 712 [2023-11-21 22:23:07,535 INFO L226 Difference]: Without dead ends: 711 [2023-11-21 22:23:07,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 22:23:07,541 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 193 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:07,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 530 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:23:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-21 22:23:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 664. [2023-11-21 22:23:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 662 states have (on average 1.0740181268882176) internal successors, (711), 663 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2023-11-21 22:23:07,566 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 326 [2023-11-21 22:23:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:07,567 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2023-11-21 22:23:07,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2023-11-21 22:23:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-21 22:23:07,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:07,574 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1] [2023-11-21 22:23:07,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:23:07,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:23:07,788 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:23:07,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1833855518, now seen corresponding path program 5 times [2023-11-21 22:23:07,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:07,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178827116] [2023-11-21 22:23:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178827116] [2023-11-21 22:23:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178827116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039909048] [2023-11-21 22:23:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 22:23:10,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:23:10,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:10,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:23:10,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:23:10,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-21 22:23:10,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:23:10,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 22:23:10,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:23:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:11,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:23:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039909048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:23:15,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:23:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-21 22:23:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59266928] [2023-11-21 22:23:15,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:23:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-21 22:23:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-21 22:23:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 22:23:15,450 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:15,973 INFO L93 Difference]: Finished difference Result 666 states and 713 transitions. [2023-11-21 22:23:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-21 22:23:15,973 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2023-11-21 22:23:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:15,978 INFO L225 Difference]: With dead ends: 666 [2023-11-21 22:23:15,978 INFO L226 Difference]: Without dead ends: 665 [2023-11-21 22:23:15,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 22:23:15,983 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:15,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 482 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:23:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-21 22:23:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2023-11-21 22:23:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 663 states have (on average 1.0030165912518854) internal successors, (665), 664 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 665 transitions. [2023-11-21 22:23:16,010 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 665 transitions. Word has length 327 [2023-11-21 22:23:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 665 transitions. [2023-11-21 22:23:16,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 665 transitions. [2023-11-21 22:23:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-21 22:23:16,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:16,030 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1] [2023-11-21 22:23:16,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:23:16,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:23:16,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:23:16,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1528006419, now seen corresponding path program 6 times [2023-11-21 22:23:16,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:16,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314329484] [2023-11-21 22:23:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:16,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:26,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314329484] [2023-11-21 22:23:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314329484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245591715] [2023-11-21 22:23:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-21 22:23:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:23:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:26,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:23:26,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a553fca4-ebd4-4627-87c0-e66155e80c9a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:23:26,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-11-21 22:23:26,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:23:26,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-21 22:23:26,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:23:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:28,003 INFO L327 TraceCheckSpWp]: Computing backward predicates...