./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:15:03,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:15:03,149 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 01:15:03,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:15:03,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:15:03,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:15:03,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:15:03,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:15:03,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:15:03,183 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:15:03,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:15:03,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:15:03,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:15:03,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:15:03,186 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:15:03,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:15:03,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:15:03,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:15:03,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:15:03,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:15:03,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:15:03,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:15:03,190 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:15:03,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:15:03,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:15:03,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:15:03,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:15:03,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:15:03,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:15:03,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:15:03,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:03,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:15:03,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:15:03,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:15:03,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:15:03,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:15:03,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:15:03,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:15:03,196 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:15:03,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:15:03,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:15:03,196 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_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2023-11-29 01:15:03,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:15:03,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:15:03,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:15:03,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:15:03,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:15:03,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/twisted.c [2023-11-29 01:15:06,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:15:06,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:15:06,429 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/sv-benchmarks/c/termination-numeric/twisted.c [2023-11-29 01:15:06,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/data/bb094a463/5a89cb31cf6843b9bd832acd2195ab61/FLAG68df07055 [2023-11-29 01:15:06,450 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/data/bb094a463/5a89cb31cf6843b9bd832acd2195ab61 [2023-11-29 01:15:06,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:15:06,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:15:06,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:06,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:15:06,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:15:06,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746cd2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06, skipping insertion in model container [2023-11-29 01:15:06,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:06,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:06,609 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:15:06,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:06,636 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:15:06,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06 WrapperNode [2023-11-29 01:15:06,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:06,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:06,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:15:06,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:15:06,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,667 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-11-29 01:15:06,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:06,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:15:06,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:15:06,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:15:06,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,685 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 01:15:06,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:15:06,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:15:06,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:15:06,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:15:06,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (1/1) ... [2023-11-29 01:15:06,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:06,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:15:06,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:15:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:15:06,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:15:06,810 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:15:06,811 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:15:06,935 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:15:06,969 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:15:06,969 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:15:06,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:06 BoogieIcfgContainer [2023-11-29 01:15:06,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:15:06,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:15:06,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:15:06,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:15:06,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:15:06" (1/3) ... [2023-11-29 01:15:06,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d70138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:06, skipping insertion in model container [2023-11-29 01:15:06,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:06" (2/3) ... [2023-11-29 01:15:06,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d70138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:06, skipping insertion in model container [2023-11-29 01:15:06,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:06" (3/3) ... [2023-11-29 01:15:06,981 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2023-11-29 01:15:06,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:15:06,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 01:15:07,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:15:07,045 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;@268e2a63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:15:07,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 01:15:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-29 01:15:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:15:07,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:15:07,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2584514, now seen corresponding path program 1 times [2023-11-29 01:15:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647387596] [2023-11-29 01:15:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647387596] [2023-11-29 01:15:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647387596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:07,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645516653] [2023-11-29 01:15:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:15:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:15:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:15:07,221 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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 2 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) [2023-11-29 01:15:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,243 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-29 01:15:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:15:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2023-11-29 01:15:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,252 INFO L225 Difference]: With dead ends: 39 [2023-11-29 01:15:07,252 INFO L226 Difference]: Without dead ends: 19 [2023-11-29 01:15:07,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:15:07,257 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-29 01:15:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-29 01:15:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 18 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) [2023-11-29 01:15:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-29 01:15:07,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2023-11-29 01:15:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,285 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-29 01:15:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-11-29 01:15:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-29 01:15:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:15:07,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:15:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:15:07,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2568145, now seen corresponding path program 1 times [2023-11-29 01:15:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828765998] [2023-11-29 01:15:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828765998] [2023-11-29 01:15:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828765998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157698591] [2023-11-29 01:15:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:07,353 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2023-11-29 01:15:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,407 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-11-29 01:15:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2023-11-29 01:15:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,409 INFO L225 Difference]: With dead ends: 19 [2023-11-29 01:15:07,409 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 01:15:07,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:07,411 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 01:15:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-29 01:15:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 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) [2023-11-29 01:15:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-29 01:15:07,418 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2023-11-29 01:15:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,418 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-29 01:15:07,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2023-11-29 01:15:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-29 01:15:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:15:07,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:15:07,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:15:07,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 79612540, now seen corresponding path program 1 times [2023-11-29 01:15:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545679377] [2023-11-29 01:15:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545679377] [2023-11-29 01:15:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545679377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:07,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058386581] [2023-11-29 01:15:07,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:07,482 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-29 01:15:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,550 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-29 01:15:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2023-11-29 01:15:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,552 INFO L225 Difference]: With dead ends: 34 [2023-11-29 01:15:07,552 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 01:15:07,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:07,554 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 01:15:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-11-29 01:15:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 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) [2023-11-29 01:15:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-11-29 01:15:07,563 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 5 [2023-11-29 01:15:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,563 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-11-29 01:15:07,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-29 01:15:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-11-29 01:15:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:15:07,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:15:07,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:15:07,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025136, now seen corresponding path program 1 times [2023-11-29 01:15:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262492636] [2023-11-29 01:15:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262492636] [2023-11-29 01:15:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262492636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:15:07,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058268161] [2023-11-29 01:15:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:07,613 INFO L87 Difference]: Start difference. First operand 27 states and 35 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) [2023-11-29 01:15:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,653 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-29 01:15:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:07,654 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 [2023-11-29 01:15:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,655 INFO L225 Difference]: With dead ends: 40 [2023-11-29 01:15:07,655 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 01:15:07,656 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 [2023-11-29 01:15:07,658 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 01:15:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-11-29 01:15:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 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) [2023-11-29 01:15:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-11-29 01:15:07,667 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 6 [2023-11-29 01:15:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,668 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-11-29 01:15:07,668 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) [2023-11-29 01:15:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-11-29 01:15:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:15:07,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:15:07,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:15:07,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025086, now seen corresponding path program 1 times [2023-11-29 01:15:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550079816] [2023-11-29 01:15:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550079816] [2023-11-29 01:15:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550079816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092213379] [2023-11-29 01:15:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:07,717 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-11-29 01:15:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,748 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-11-29 01:15:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2023-11-29 01:15:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,749 INFO L225 Difference]: With dead ends: 32 [2023-11-29 01:15:07,750 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 01:15:07,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:07,752 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 01:15:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-29 01:15:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 30 states have internal predecessors, (40), 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) [2023-11-29 01:15:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-29 01:15:07,760 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 6 [2023-11-29 01:15:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,761 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-29 01:15:07,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-11-29 01:15:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-29 01:15:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:15:07,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:15:07,762 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)] === [2023-11-29 01:15:07,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash -803204291, now seen corresponding path program 1 times [2023-11-29 01:15:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505668271] [2023-11-29 01:15:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505668271] [2023-11-29 01:15:07,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505668271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:15:07,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195820851] [2023-11-29 01:15:07,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:07,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:07,803 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-29 01:15:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,839 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-11-29 01:15:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:07,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2023-11-29 01:15:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,841 INFO L225 Difference]: With dead ends: 38 [2023-11-29 01:15:07,841 INFO L226 Difference]: Without dead ends: 35 [2023-11-29 01:15:07,841 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 [2023-11-29 01:15:07,842 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-29 01:15:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-11-29 01:15:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 29 states have internal predecessors, (38), 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) [2023-11-29 01:15:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-11-29 01:15:07,851 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 7 [2023-11-29 01:15:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,851 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-11-29 01:15:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-29 01:15:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-11-29 01:15:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:15:07,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:07,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:15:07,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash -803202753, now seen corresponding path program 1 times [2023-11-29 01:15:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453547162] [2023-11-29 01:15:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:07,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453547162] [2023-11-29 01:15:07,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453547162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:07,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:07,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600992390] [2023-11-29 01:15:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:07,898 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2023-11-29 01:15:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:07,935 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-11-29 01:15:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:07,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2023-11-29 01:15:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:07,937 INFO L225 Difference]: With dead ends: 48 [2023-11-29 01:15:07,937 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 01:15:07,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:07,939 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 01:15:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-11-29 01:15:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 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) [2023-11-29 01:15:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-11-29 01:15:07,949 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2023-11-29 01:15:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:07,949 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-11-29 01:15:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2023-11-29 01:15:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-11-29 01:15:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:15:07,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:07,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-29 01:15:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:15:07,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:07,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1691116137, now seen corresponding path program 1 times [2023-11-29 01:15:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:07,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218666413] [2023-11-29 01:15:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218666413] [2023-11-29 01:15:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218666413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30865737] [2023-11-29 01:15:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:08,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:08,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:08,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:15:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:08,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:08,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30865737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:08,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:08,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 01:15:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672341739] [2023-11-29 01:15:08,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:08,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:15:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:15:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:15:08,187 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2023-11-29 01:15:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:08,344 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2023-11-29 01:15:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:15:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 01:15:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:08,346 INFO L225 Difference]: With dead ends: 118 [2023-11-29 01:15:08,346 INFO L226 Difference]: Without dead ends: 117 [2023-11-29 01:15:08,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:15:08,347 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:08,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-29 01:15:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 77. [2023-11-29 01:15:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 76 states have internal predecessors, (105), 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) [2023-11-29 01:15:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2023-11-29 01:15:08,361 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 9 [2023-11-29 01:15:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:08,362 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2023-11-29 01:15:08,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2023-11-29 01:15:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2023-11-29 01:15:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:15:08,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:08,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:08,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:08,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:08,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:08,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1691041614, now seen corresponding path program 1 times [2023-11-29 01:15:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:08,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895753920] [2023-11-29 01:15:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895753920] [2023-11-29 01:15:08,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895753920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:08,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:08,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:08,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153788552] [2023-11-29 01:15:08,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:08,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:08,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:08,631 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:08,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:08,706 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2023-11-29 01:15:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:08,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 01:15:08,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:08,709 INFO L225 Difference]: With dead ends: 82 [2023-11-29 01:15:08,709 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 01:15:08,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:15:08,710 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:08,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 01:15:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2023-11-29 01:15:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 77 states have internal predecessors, (106), 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) [2023-11-29 01:15:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2023-11-29 01:15:08,721 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 9 [2023-11-29 01:15:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:08,722 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2023-11-29 01:15:08,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2023-11-29 01:15:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:15:08,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:08,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:08,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:15:08,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:08,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash -950341355, now seen corresponding path program 1 times [2023-11-29 01:15:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873137425] [2023-11-29 01:15:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873137425] [2023-11-29 01:15:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873137425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637228082] [2023-11-29 01:15:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:08,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:08,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:15:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:08,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:08,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:08,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:08,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637228082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:08,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:08,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-29 01:15:08,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377147264] [2023-11-29 01:15:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:08,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:08,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:15:08,924 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:15:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:09,019 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2023-11-29 01:15:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2023-11-29 01:15:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:09,021 INFO L225 Difference]: With dead ends: 94 [2023-11-29 01:15:09,022 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 01:15:09,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:15:09,023 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:09,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 01:15:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2023-11-29 01:15:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 86 states have internal predecessors, (119), 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) [2023-11-29 01:15:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2023-11-29 01:15:09,033 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 10 [2023-11-29 01:15:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:09,033 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2023-11-29 01:15:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:15:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2023-11-29 01:15:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:15:09,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:09,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:09,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:15:09,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:15:09,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash -882682405, now seen corresponding path program 1 times [2023-11-29 01:15:09,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:09,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951690285] [2023-11-29 01:15:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951690285] [2023-11-29 01:15:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951690285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977231457] [2023-11-29 01:15:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:09,297 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:15:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:09,357 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2023-11-29 01:15:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:15:09,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2023-11-29 01:15:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:09,359 INFO L225 Difference]: With dead ends: 90 [2023-11-29 01:15:09,359 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 01:15:09,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:09,360 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 01:15:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 01:15:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.4216867469879517) internal successors, (118), 86 states have internal predecessors, (118), 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) [2023-11-29 01:15:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2023-11-29 01:15:09,371 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 10 [2023-11-29 01:15:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2023-11-29 01:15:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:15:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2023-11-29 01:15:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 01:15:09,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:09,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:09,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:15:09,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash 604189144, now seen corresponding path program 1 times [2023-11-29 01:15:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991759208] [2023-11-29 01:15:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:09,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991759208] [2023-11-29 01:15:09,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991759208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:09,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9948007] [2023-11-29 01:15:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:09,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:09,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:15:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:09,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:09,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:09,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9948007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:09,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-29 01:15:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858943073] [2023-11-29 01:15:09,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:15:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:15:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:15:09,589 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2023-11-29 01:15:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:09,758 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2023-11-29 01:15:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:15:09,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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 [2023-11-29 01:15:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:09,760 INFO L225 Difference]: With dead ends: 130 [2023-11-29 01:15:09,760 INFO L226 Difference]: Without dead ends: 121 [2023-11-29 01:15:09,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:15:09,761 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 58 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:09,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-29 01:15:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2023-11-29 01:15:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 102 states have internal predecessors, (141), 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) [2023-11-29 01:15:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2023-11-29 01:15:09,772 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 11 [2023-11-29 01:15:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:09,772 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2023-11-29 01:15:09,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2023-11-29 01:15:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2023-11-29 01:15:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 01:15:09,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:09,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:09,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:15:09,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:15:09,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:09,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash 604190682, now seen corresponding path program 1 times [2023-11-29 01:15:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954700989] [2023-11-29 01:15:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:10,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954700989] [2023-11-29 01:15:10,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954700989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058137848] [2023-11-29 01:15:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:10,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:10,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:10,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:10,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:15:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:10,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:10,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:10,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058137848] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:10,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 01:15:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632905829] [2023-11-29 01:15:10,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:15:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:15:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:15:10,152 INFO L87 Difference]: Start difference. First operand 103 states and 141 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2023-11-29 01:15:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:10,258 INFO L93 Difference]: Finished difference Result 270 states and 374 transitions. [2023-11-29 01:15:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:15:10,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 [2023-11-29 01:15:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:10,261 INFO L225 Difference]: With dead ends: 270 [2023-11-29 01:15:10,261 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 01:15:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:15:10,263 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 105 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:10,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 80 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 01:15:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 250. [2023-11-29 01:15:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.4024390243902438) internal successors, (345), 249 states have internal predecessors, (345), 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) [2023-11-29 01:15:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 345 transitions. [2023-11-29 01:15:10,282 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 345 transitions. Word has length 11 [2023-11-29 01:15:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:10,283 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 345 transitions. [2023-11-29 01:15:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2023-11-29 01:15:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 345 transitions. [2023-11-29 01:15:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:15:10,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:10,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:10,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:15:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:15:10,490 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:10,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2139111863, now seen corresponding path program 1 times [2023-11-29 01:15:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193072962] [2023-11-29 01:15:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:10,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:10,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193072962] [2023-11-29 01:15:10,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193072962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:10,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55611318] [2023-11-29 01:15:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:10,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:10,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:10,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:10,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:15:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:10,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:15:10,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:10,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55611318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:10,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:10,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-29 01:15:10,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980891504] [2023-11-29 01:15:10,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:15:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:15:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:15:10,734 INFO L87 Difference]: Start difference. First operand 250 states and 345 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-29 01:15:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:10,908 INFO L93 Difference]: Finished difference Result 409 states and 565 transitions. [2023-11-29 01:15:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:15:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) Word has length 13 [2023-11-29 01:15:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:10,912 INFO L225 Difference]: With dead ends: 409 [2023-11-29 01:15:10,912 INFO L226 Difference]: Without dead ends: 408 [2023-11-29 01:15:10,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:15:10,913 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:10,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-29 01:15:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 400. [2023-11-29 01:15:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 1.4141414141414141) internal successors, (560), 399 states have internal predecessors, (560), 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) [2023-11-29 01:15:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 560 transitions. [2023-11-29 01:15:10,939 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 560 transitions. Word has length 13 [2023-11-29 01:15:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:10,940 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 560 transitions. [2023-11-29 01:15:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-29 01:15:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 560 transitions. [2023-11-29 01:15:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:15:10,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:10,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:10,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:11,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:15:11,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:11,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1510816672, now seen corresponding path program 1 times [2023-11-29 01:15:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134618673] [2023-11-29 01:15:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134618673] [2023-11-29 01:15:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134618673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983860926] [2023-11-29 01:15:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:11,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:11,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:15:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:11,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:15:11,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:11,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983860926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:11,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:11,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 01:15:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478350884] [2023-11-29 01:15:11,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:15:11,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:15:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:15:11,427 INFO L87 Difference]: Start difference. First operand 400 states and 560 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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) [2023-11-29 01:15:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:11,530 INFO L93 Difference]: Finished difference Result 424 states and 587 transitions. [2023-11-29 01:15:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:15:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 14 [2023-11-29 01:15:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:11,533 INFO L225 Difference]: With dead ends: 424 [2023-11-29 01:15:11,533 INFO L226 Difference]: Without dead ends: 417 [2023-11-29 01:15:11,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:15:11,535 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:11,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 42 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-29 01:15:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2023-11-29 01:15:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 405 states have (on average 1.4049382716049383) internal successors, (569), 408 states have internal predecessors, (569), 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) [2023-11-29 01:15:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 569 transitions. [2023-11-29 01:15:11,550 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 569 transitions. Word has length 14 [2023-11-29 01:15:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:11,550 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 569 transitions. [2023-11-29 01:15:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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) [2023-11-29 01:15:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 569 transitions. [2023-11-29 01:15:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:15:11,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:11,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:11,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:15:11,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:15:11,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:11,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1788216499, now seen corresponding path program 1 times [2023-11-29 01:15:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061058684] [2023-11-29 01:15:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061058684] [2023-11-29 01:15:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061058684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491765151] [2023-11-29 01:15:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:11,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:11,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:11,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:11,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:15:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:11,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:15:11,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:11,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491765151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:12,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 01:15:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962484421] [2023-11-29 01:15:12,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:15:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:15:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:15:12,017 INFO L87 Difference]: Start difference. First operand 409 states and 569 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2023-11-29 01:15:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:12,301 INFO L93 Difference]: Finished difference Result 498 states and 682 transitions. [2023-11-29 01:15:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:15:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 15 [2023-11-29 01:15:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:12,305 INFO L225 Difference]: With dead ends: 498 [2023-11-29 01:15:12,305 INFO L226 Difference]: Without dead ends: 487 [2023-11-29 01:15:12,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:15:12,307 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 73 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:12,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 44 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-29 01:15:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 438. [2023-11-29 01:15:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 434 states have (on average 1.3986175115207373) internal successors, (607), 437 states have internal predecessors, (607), 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) [2023-11-29 01:15:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 607 transitions. [2023-11-29 01:15:12,325 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 607 transitions. Word has length 15 [2023-11-29 01:15:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:12,325 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 607 transitions. [2023-11-29 01:15:12,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2023-11-29 01:15:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 607 transitions. [2023-11-29 01:15:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:15:12,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:12,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:12,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:15:12,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:15:12,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:12,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1993269948, now seen corresponding path program 1 times [2023-11-29 01:15:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690743788] [2023-11-29 01:15:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:12,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:12,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690743788] [2023-11-29 01:15:12,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690743788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:12,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237018934] [2023-11-29 01:15:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:12,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:12,555 INFO L87 Difference]: Start difference. First operand 438 states and 607 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-29 01:15:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:12,603 INFO L93 Difference]: Finished difference Result 738 states and 1021 transitions. [2023-11-29 01:15:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 16 [2023-11-29 01:15:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:12,606 INFO L225 Difference]: With dead ends: 738 [2023-11-29 01:15:12,606 INFO L226 Difference]: Without dead ends: 400 [2023-11-29 01:15:12,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:12,609 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:12,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-29 01:15:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 301. [2023-11-29 01:15:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 298 states have (on average 1.3456375838926173) internal successors, (401), 300 states have internal predecessors, (401), 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) [2023-11-29 01:15:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 401 transitions. [2023-11-29 01:15:12,633 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 401 transitions. Word has length 16 [2023-11-29 01:15:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:12,633 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 401 transitions. [2023-11-29 01:15:12,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-29 01:15:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 401 transitions. [2023-11-29 01:15:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 01:15:12,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:12,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:12,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:15:12,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:12,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1311621504, now seen corresponding path program 1 times [2023-11-29 01:15:12,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:12,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166996134] [2023-11-29 01:15:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166996134] [2023-11-29 01:15:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166996134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682625373] [2023-11-29 01:15:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:12,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:12,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:12,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:12,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:15:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:12,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:15:12,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:13,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682625373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:13,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:13,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-11-29 01:15:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88845991] [2023-11-29 01:15:13,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:13,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:15:13,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:15:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:15:13,176 INFO L87 Difference]: Start difference. First operand 301 states and 401 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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) [2023-11-29 01:15:13,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:13,782 INFO L93 Difference]: Finished difference Result 520 states and 678 transitions. [2023-11-29 01:15:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 01:15:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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 22 [2023-11-29 01:15:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:13,787 INFO L225 Difference]: With dead ends: 520 [2023-11-29 01:15:13,787 INFO L226 Difference]: Without dead ends: 503 [2023-11-29 01:15:13,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=626, Invalid=2130, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:15:13,789 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 255 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:13,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 47 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:15:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-29 01:15:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 325. [2023-11-29 01:15:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 322 states have (on average 1.3726708074534162) internal successors, (442), 324 states have internal predecessors, (442), 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) [2023-11-29 01:15:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 442 transitions. [2023-11-29 01:15:13,816 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 442 transitions. Word has length 22 [2023-11-29 01:15:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:13,816 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 442 transitions. [2023-11-29 01:15:13,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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) [2023-11-29 01:15:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 442 transitions. [2023-11-29 01:15:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:15:13,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:13,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:13,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:15:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:15:14,021 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:14,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1686039721, now seen corresponding path program 2 times [2023-11-29 01:15:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:14,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720425235] [2023-11-29 01:15:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720425235] [2023-11-29 01:15:14,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720425235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994894328] [2023-11-29 01:15:14,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:14,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:14,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:15:14,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:14,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:14,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:15:14,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:14,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994894328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:14,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-11-29 01:15:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447466293] [2023-11-29 01:15:14,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:15:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:15:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:15:14,568 INFO L87 Difference]: Start difference. First operand 325 states and 442 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-29 01:15:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:15,086 INFO L93 Difference]: Finished difference Result 442 states and 577 transitions. [2023-11-29 01:15:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:15:15,087 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 23 [2023-11-29 01:15:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:15,090 INFO L225 Difference]: With dead ends: 442 [2023-11-29 01:15:15,090 INFO L226 Difference]: Without dead ends: 427 [2023-11-29 01:15:15,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=651, Invalid=1605, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:15:15,092 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 233 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:15,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 60 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:15:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-29 01:15:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 408. [2023-11-29 01:15:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 405 states have (on average 1.3382716049382717) internal successors, (542), 407 states have internal predecessors, (542), 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) [2023-11-29 01:15:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 542 transitions. [2023-11-29 01:15:15,126 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 542 transitions. Word has length 23 [2023-11-29 01:15:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:15,126 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 542 transitions. [2023-11-29 01:15:15,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-29 01:15:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 542 transitions. [2023-11-29 01:15:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:15:15,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:15,128 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-11-29 01:15:15,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:15:15,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:15,333 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:15,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1686041259, now seen corresponding path program 2 times [2023-11-29 01:15:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:15,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176755813] [2023-11-29 01:15:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176755813] [2023-11-29 01:15:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176755813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957027386] [2023-11-29 01:15:15,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:15,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:15,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:15,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:15,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:15:15,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:15:15,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:15,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:15,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:15:15,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:15:15,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957027386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:15,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:15,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 01:15:15,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667629263] [2023-11-29 01:15:15,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:15,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:15:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:15:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:15:15,584 INFO L87 Difference]: Start difference. First operand 408 states and 542 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2023-11-29 01:15:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:15,781 INFO L93 Difference]: Finished difference Result 480 states and 632 transitions. [2023-11-29 01:15:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:15:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 23 [2023-11-29 01:15:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:15,785 INFO L225 Difference]: With dead ends: 480 [2023-11-29 01:15:15,785 INFO L226 Difference]: Without dead ends: 479 [2023-11-29 01:15:15,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:15:15,786 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 120 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:15,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 110 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-29 01:15:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 255. [2023-11-29 01:15:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 1.300395256916996) internal successors, (329), 254 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) [2023-11-29 01:15:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 329 transitions. [2023-11-29 01:15:15,815 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 329 transitions. Word has length 23 [2023-11-29 01:15:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:15,815 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 329 transitions. [2023-11-29 01:15:15,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2023-11-29 01:15:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 329 transitions. [2023-11-29 01:15:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:15:15,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:15,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:15,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:15:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:16,021 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:16,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash 232076103, now seen corresponding path program 1 times [2023-11-29 01:15:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074083106] [2023-11-29 01:15:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074083106] [2023-11-29 01:15:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074083106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062518546] [2023-11-29 01:15:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:16,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:16,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:16,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:15:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:16,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:15:16,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:16,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062518546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:16,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-11-29 01:15:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259801419] [2023-11-29 01:15:16,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:16,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:15:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:15:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:15:16,552 INFO L87 Difference]: Start difference. First operand 255 states and 329 transitions. Second operand has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 34 states have internal predecessors, (78), 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) [2023-11-29 01:15:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:17,179 INFO L93 Difference]: Finished difference Result 569 states and 712 transitions. [2023-11-29 01:15:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:15:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 34 states have internal predecessors, (78), 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 26 [2023-11-29 01:15:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:17,184 INFO L225 Difference]: With dead ends: 569 [2023-11-29 01:15:17,184 INFO L226 Difference]: Without dead ends: 552 [2023-11-29 01:15:17,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=899, Invalid=2761, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:15:17,186 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 249 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:17,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 76 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:15:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-29 01:15:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 317. [2023-11-29 01:15:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 315 states have (on average 1.3142857142857143) internal successors, (414), 316 states have internal predecessors, (414), 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) [2023-11-29 01:15:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 414 transitions. [2023-11-29 01:15:17,212 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 414 transitions. Word has length 26 [2023-11-29 01:15:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 414 transitions. [2023-11-29 01:15:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 34 states have internal predecessors, (78), 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) [2023-11-29 01:15:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 414 transitions. [2023-11-29 01:15:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:15:17,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:17,213 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:17,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:15:17,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:15:17,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:17,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1291121537, now seen corresponding path program 1 times [2023-11-29 01:15:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:17,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791450268] [2023-11-29 01:15:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791450268] [2023-11-29 01:15:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791450268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603139468] [2023-11-29 01:15:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:17,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:17,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:17,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:15:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:17,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:15:17,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:17,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:17,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603139468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:17,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:17,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-29 01:15:17,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048148332] [2023-11-29 01:15:17,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:15:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:15:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:15:17,792 INFO L87 Difference]: Start difference. First operand 317 states and 414 transitions. Second operand has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2023-11-29 01:15:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:18,084 INFO L93 Difference]: Finished difference Result 649 states and 849 transitions. [2023-11-29 01:15:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:15:18,084 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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 27 [2023-11-29 01:15:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:18,088 INFO L225 Difference]: With dead ends: 649 [2023-11-29 01:15:18,088 INFO L226 Difference]: Without dead ends: 648 [2023-11-29 01:15:18,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:15:18,090 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 194 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:18,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 92 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-11-29 01:15:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 357. [2023-11-29 01:15:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 355 states have (on average 1.3295774647887324) internal successors, (472), 356 states have internal predecessors, (472), 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) [2023-11-29 01:15:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 472 transitions. [2023-11-29 01:15:18,119 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 472 transitions. Word has length 27 [2023-11-29 01:15:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:18,120 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 472 transitions. [2023-11-29 01:15:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2023-11-29 01:15:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 472 transitions. [2023-11-29 01:15:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:15:18,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:18,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:18,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:15:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:15:18,322 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:18,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -28881566, now seen corresponding path program 1 times [2023-11-29 01:15:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86726169] [2023-11-29 01:15:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86726169] [2023-11-29 01:15:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86726169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443802257] [2023-11-29 01:15:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:18,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:18,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:18,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:15:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:18,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:15:18,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:18,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:19,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443802257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:19,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-11-29 01:15:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360404448] [2023-11-29 01:15:19,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 01:15:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 01:15:19,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:15:19,095 INFO L87 Difference]: Start difference. First operand 357 states and 472 transitions. Second operand has 41 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 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) [2023-11-29 01:15:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:20,191 INFO L93 Difference]: Finished difference Result 971 states and 1227 transitions. [2023-11-29 01:15:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 01:15:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 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 [2023-11-29 01:15:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:20,196 INFO L225 Difference]: With dead ends: 971 [2023-11-29 01:15:20,196 INFO L226 Difference]: Without dead ends: 950 [2023-11-29 01:15:20,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1750, Invalid=6440, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 01:15:20,199 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 417 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:20,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 71 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:15:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-11-29 01:15:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 502. [2023-11-29 01:15:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 500 states have (on average 1.332) internal successors, (666), 501 states have internal predecessors, (666), 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) [2023-11-29 01:15:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 666 transitions. [2023-11-29 01:15:20,240 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 666 transitions. Word has length 32 [2023-11-29 01:15:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:20,240 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 666 transitions. [2023-11-29 01:15:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 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) [2023-11-29 01:15:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 666 transitions. [2023-11-29 01:15:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 01:15:20,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:20,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:20,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:15:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:15:20,443 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:20,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -353045293, now seen corresponding path program 2 times [2023-11-29 01:15:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985588940] [2023-11-29 01:15:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985588940] [2023-11-29 01:15:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985588940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272171480] [2023-11-29 01:15:20,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:20,662 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:20,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:15:20,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:20,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:20,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:15:20,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:20,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272171480] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:21,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:21,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-11-29 01:15:21,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370194976] [2023-11-29 01:15:21,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:21,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:15:21,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:15:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1730, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:15:21,250 INFO L87 Difference]: Start difference. First operand 502 states and 666 transitions. Second operand has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 46 states have internal predecessors, (114), 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) [2023-11-29 01:15:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:22,530 INFO L93 Difference]: Finished difference Result 1478 states and 1886 transitions. [2023-11-29 01:15:22,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 01:15:22,531 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 46 states have internal predecessors, (114), 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 38 [2023-11-29 01:15:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:22,540 INFO L225 Difference]: With dead ends: 1478 [2023-11-29 01:15:22,540 INFO L226 Difference]: Without dead ends: 1445 [2023-11-29 01:15:22,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1979, Invalid=7141, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 01:15:22,545 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 408 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:22,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 65 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:15:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2023-11-29 01:15:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 686. [2023-11-29 01:15:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 684 states have (on average 1.337719298245614) internal successors, (915), 685 states have internal predecessors, (915), 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) [2023-11-29 01:15:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 915 transitions. [2023-11-29 01:15:22,651 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 915 transitions. Word has length 38 [2023-11-29 01:15:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:22,651 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 915 transitions. [2023-11-29 01:15:22,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 46 states have internal predecessors, (114), 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) [2023-11-29 01:15:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 915 transitions. [2023-11-29 01:15:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 01:15:22,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:22,653 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:22,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:15:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:22,854 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:22,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash -150656589, now seen corresponding path program 3 times [2023-11-29 01:15:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391857854] [2023-11-29 01:15:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391857854] [2023-11-29 01:15:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391857854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303672632] [2023-11-29 01:15:23,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:15:23,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:23,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:23,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:15:23,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:15:23,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:23,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:23,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 01:15:23,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303672632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 22 [2023-11-29 01:15:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122319814] [2023-11-29 01:15:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:15:23,274 INFO L87 Difference]: Start difference. First operand 686 states and 915 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2023-11-29 01:15:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:23,397 INFO L93 Difference]: Finished difference Result 1018 states and 1345 transitions. [2023-11-29 01:15:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:23,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 44 [2023-11-29 01:15:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:23,401 INFO L225 Difference]: With dead ends: 1018 [2023-11-29 01:15:23,401 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 01:15:23,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:15:23,403 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:23,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:15:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 01:15:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 466. [2023-11-29 01:15:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.2543103448275863) internal successors, (582), 465 states have internal predecessors, (582), 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) [2023-11-29 01:15:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 582 transitions. [2023-11-29 01:15:23,493 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 582 transitions. Word has length 44 [2023-11-29 01:15:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:23,493 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 582 transitions. [2023-11-29 01:15:23,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2023-11-29 01:15:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 582 transitions. [2023-11-29 01:15:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:15:23,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:23,495 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:23,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:15:23,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:15:23,701 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:23,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1722712174, now seen corresponding path program 1 times [2023-11-29 01:15:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146195511] [2023-11-29 01:15:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146195511] [2023-11-29 01:15:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146195511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815493163] [2023-11-29 01:15:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:24,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:24,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:24,050 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:24,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:15:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:24,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:15:24,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:24,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815493163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:25,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-11-29 01:15:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435228094] [2023-11-29 01:15:25,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:25,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 01:15:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:25,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 01:15:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:15:25,017 INFO L87 Difference]: Start difference. First operand 466 states and 582 transitions. Second operand has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2023-11-29 01:15:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:26,719 INFO L93 Difference]: Finished difference Result 1348 states and 1579 transitions. [2023-11-29 01:15:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-29 01:15:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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 45 [2023-11-29 01:15:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:26,726 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 01:15:26,726 INFO L226 Difference]: Without dead ends: 1325 [2023-11-29 01:15:26,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2935, Invalid=9947, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 01:15:26,730 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 530 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:26,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 98 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:15:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-29 01:15:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 689. [2023-11-29 01:15:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 687 states have (on average 1.2518195050946144) internal successors, (860), 688 states have internal predecessors, (860), 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) [2023-11-29 01:15:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 860 transitions. [2023-11-29 01:15:26,832 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 860 transitions. Word has length 45 [2023-11-29 01:15:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:26,833 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 860 transitions. [2023-11-29 01:15:26,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2023-11-29 01:15:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 860 transitions. [2023-11-29 01:15:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 01:15:26,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:26,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:26,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:15:27,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:15:27,035 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -704514708, now seen corresponding path program 2 times [2023-11-29 01:15:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721680085] [2023-11-29 01:15:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721680085] [2023-11-29 01:15:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721680085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499992220] [2023-11-29 01:15:27,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:27,349 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:27,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:15:27,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:27,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:27,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:15:27,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:27,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499992220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:28,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-11-29 01:15:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556400445] [2023-11-29 01:15:28,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:28,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 01:15:28,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 01:15:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:15:28,324 INFO L87 Difference]: Start difference. First operand 689 states and 860 transitions. Second operand has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 58 states have internal predecessors, (141), 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) [2023-11-29 01:15:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:30,600 INFO L93 Difference]: Finished difference Result 1986 states and 2413 transitions. [2023-11-29 01:15:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-29 01:15:30,600 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 58 states have internal predecessors, (141), 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 47 [2023-11-29 01:15:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:30,612 INFO L225 Difference]: With dead ends: 1986 [2023-11-29 01:15:30,612 INFO L226 Difference]: Without dead ends: 1957 [2023-11-29 01:15:30,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3749, Invalid=13807, Unknown=0, NotChecked=0, Total=17556 [2023-11-29 01:15:30,616 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 649 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:30,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 80 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:15:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2023-11-29 01:15:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 864. [2023-11-29 01:15:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.2645011600928073) internal successors, (1090), 863 states have internal predecessors, (1090), 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) [2023-11-29 01:15:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1090 transitions. [2023-11-29 01:15:30,761 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1090 transitions. Word has length 47 [2023-11-29 01:15:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1090 transitions. [2023-11-29 01:15:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 58 states have internal predecessors, (141), 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) [2023-11-29 01:15:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1090 transitions. [2023-11-29 01:15:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:15:30,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:30,763 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:30,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:15:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:15:30,963 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:30,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1091550209, now seen corresponding path program 3 times [2023-11-29 01:15:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820080505] [2023-11-29 01:15:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820080505] [2023-11-29 01:15:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820080505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572445901] [2023-11-29 01:15:31,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:15:31,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:31,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:31,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:31,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:15:31,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:15:31,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:31,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:15:31,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 01:15:31,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 01:15:32,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572445901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:32,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:32,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 47 [2023-11-29 01:15:32,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433853230] [2023-11-29 01:15:32,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:32,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:15:32,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:15:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1989, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:15:32,539 INFO L87 Difference]: Start difference. First operand 864 states and 1090 transitions. Second operand has 48 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 47 states have internal predecessors, (127), 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) [2023-11-29 01:15:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:36,327 INFO L93 Difference]: Finished difference Result 1930 states and 2338 transitions. [2023-11-29 01:15:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-29 01:15:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 47 states have internal predecessors, (127), 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 57 [2023-11-29 01:15:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:36,332 INFO L225 Difference]: With dead ends: 1930 [2023-11-29 01:15:36,332 INFO L226 Difference]: Without dead ends: 794 [2023-11-29 01:15:36,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6474 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2415, Invalid=20235, Unknown=0, NotChecked=0, Total=22650 [2023-11-29 01:15:36,335 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 933 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 334 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:15:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-29 01:15:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 547. [2023-11-29 01:15:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 545 states have (on average 1.146788990825688) internal successors, (625), 546 states have internal predecessors, (625), 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) [2023-11-29 01:15:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 625 transitions. [2023-11-29 01:15:36,429 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 625 transitions. Word has length 57 [2023-11-29 01:15:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:36,429 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 625 transitions. [2023-11-29 01:15:36,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 47 states have internal predecessors, (127), 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) [2023-11-29 01:15:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 625 transitions. [2023-11-29 01:15:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:15:36,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:36,430 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 01:15:36,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:15:36,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:15:36,631 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:36,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash 592549656, now seen corresponding path program 4 times [2023-11-29 01:15:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981627786] [2023-11-29 01:15:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:37,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981627786] [2023-11-29 01:15:37,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981627786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:37,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678281229] [2023-11-29 01:15:37,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:15:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:37,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:37,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:15:37,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:15:37,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:37,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:15:37,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:37,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:38,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678281229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:38,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2023-11-29 01:15:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155877739] [2023-11-29 01:15:38,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-11-29 01:15:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-11-29 01:15:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1276, Invalid=5530, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 01:15:38,509 INFO L87 Difference]: Start difference. First operand 547 states and 625 transitions. Second operand has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2023-11-29 01:15:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:40,550 INFO L93 Difference]: Finished difference Result 1097 states and 1230 transitions. [2023-11-29 01:15:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-29 01:15:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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 63 [2023-11-29 01:15:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:40,555 INFO L225 Difference]: With dead ends: 1097 [2023-11-29 01:15:40,555 INFO L226 Difference]: Without dead ends: 1038 [2023-11-29 01:15:40,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7520 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4411, Invalid=16181, Unknown=0, NotChecked=0, Total=20592 [2023-11-29 01:15:40,557 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 497 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:40,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 122 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:15:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-11-29 01:15:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 682. [2023-11-29 01:15:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 680 states have (on average 1.1338235294117647) internal successors, (771), 681 states have internal predecessors, (771), 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) [2023-11-29 01:15:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 771 transitions. [2023-11-29 01:15:40,667 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 771 transitions. Word has length 63 [2023-11-29 01:15:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 771 transitions. [2023-11-29 01:15:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2023-11-29 01:15:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 771 transitions. [2023-11-29 01:15:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 01:15:40,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:40,669 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 6, 5, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-29 01:15:40,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:15:40,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:15:40,870 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:40,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1330925166, now seen corresponding path program 2 times [2023-11-29 01:15:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:40,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731244914] [2023-11-29 01:15:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731244914] [2023-11-29 01:15:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731244914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230675850] [2023-11-29 01:15:41,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:41,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:41,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:15:41,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:15:41,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:41,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:41,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-29 01:15:41,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-29 01:15:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230675850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:41,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:41,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 2, 2] total 24 [2023-11-29 01:15:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301426127] [2023-11-29 01:15:41,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:15:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:15:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:15:41,532 INFO L87 Difference]: Start difference. First operand 682 states and 771 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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) [2023-11-29 01:15:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:42,210 INFO L93 Difference]: Finished difference Result 1331 states and 1470 transitions. [2023-11-29 01:15:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:15:42,211 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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 69 [2023-11-29 01:15:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:42,218 INFO L225 Difference]: With dead ends: 1331 [2023-11-29 01:15:42,218 INFO L226 Difference]: Without dead ends: 1330 [2023-11-29 01:15:42,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:15:42,219 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 203 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:42,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 95 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:15:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2023-11-29 01:15:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 556. [2023-11-29 01:15:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.10990990990991) internal successors, (616), 555 states have internal predecessors, (616), 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) [2023-11-29 01:15:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 616 transitions. [2023-11-29 01:15:42,309 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 616 transitions. Word has length 69 [2023-11-29 01:15:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:42,309 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 616 transitions. [2023-11-29 01:15:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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) [2023-11-29 01:15:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 616 transitions. [2023-11-29 01:15:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 01:15:42,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:42,310 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-29 01:15:42,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:15:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:42,511 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 438515628, now seen corresponding path program 1 times [2023-11-29 01:15:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037199081] [2023-11-29 01:15:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:42,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037199081] [2023-11-29 01:15:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037199081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904881798] [2023-11-29 01:15:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:43,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:43,075 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:43,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:15:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:43,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:15:43,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:43,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904881798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:44,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 99 [2023-11-29 01:15:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340461590] [2023-11-29 01:15:44,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:44,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-11-29 01:15:44,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-11-29 01:15:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2034, Invalid=8066, Unknown=0, NotChecked=0, Total=10100 [2023-11-29 01:15:44,982 INFO L87 Difference]: Start difference. First operand 556 states and 616 transitions. Second operand has 101 states, 100 states have (on average 2.28) internal successors, (228), 100 states have internal predecessors, (228), 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) [2023-11-29 01:15:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:47,201 INFO L93 Difference]: Finished difference Result 1048 states and 1192 transitions. [2023-11-29 01:15:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-11-29 01:15:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.28) internal successors, (228), 100 states have internal predecessors, (228), 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 76 [2023-11-29 01:15:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:47,204 INFO L225 Difference]: With dead ends: 1048 [2023-11-29 01:15:47,204 INFO L226 Difference]: Without dead ends: 977 [2023-11-29 01:15:47,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11490 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6278, Invalid=25228, Unknown=0, NotChecked=0, Total=31506 [2023-11-29 01:15:47,206 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 710 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:47,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 121 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:15:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-29 01:15:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 647. [2023-11-29 01:15:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.1253869969040247) internal successors, (727), 646 states have internal predecessors, (727), 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) [2023-11-29 01:15:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 727 transitions. [2023-11-29 01:15:47,290 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 727 transitions. Word has length 76 [2023-11-29 01:15:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:47,291 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 727 transitions. [2023-11-29 01:15:47,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 2.28) internal successors, (228), 100 states have internal predecessors, (228), 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) [2023-11-29 01:15:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 727 transitions. [2023-11-29 01:15:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:15:47,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:47,292 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:47,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:47,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:47,493 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:47,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 401589758, now seen corresponding path program 2 times [2023-11-29 01:15:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053467228] [2023-11-29 01:15:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053467228] [2023-11-29 01:15:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053467228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073344470] [2023-11-29 01:15:48,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:48,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:48,342 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:48,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:15:48,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:48,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:48,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 01:15:48,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:49,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:50,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073344470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:50,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2023-11-29 01:15:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253637034] [2023-11-29 01:15:50,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:50,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-11-29 01:15:50,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-11-29 01:15:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3096, Invalid=10946, Unknown=0, NotChecked=0, Total=14042 [2023-11-29 01:15:50,465 INFO L87 Difference]: Start difference. First operand 647 states and 727 transitions. Second operand has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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) [2023-11-29 01:15:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:51,867 INFO L93 Difference]: Finished difference Result 945 states and 1044 transitions. [2023-11-29 01:15:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-29 01:15:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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 83 [2023-11-29 01:15:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:51,872 INFO L225 Difference]: With dead ends: 945 [2023-11-29 01:15:51,872 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 01:15:51,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9966 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5767, Invalid=19039, Unknown=0, NotChecked=0, Total=24806 [2023-11-29 01:15:51,873 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 550 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:51,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 76 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:15:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 01:15:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 730. [2023-11-29 01:15:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 1.1111111111111112) internal successors, (810), 729 states have internal predecessors, (810), 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) [2023-11-29 01:15:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 810 transitions. [2023-11-29 01:15:51,972 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 810 transitions. Word has length 83 [2023-11-29 01:15:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:51,972 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 810 transitions. [2023-11-29 01:15:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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) [2023-11-29 01:15:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 810 transitions. [2023-11-29 01:15:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:15:51,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:51,974 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 01:15:51,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:15:52,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:52,175 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1674602723, now seen corresponding path program 5 times [2023-11-29 01:15:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588380724] [2023-11-29 01:15:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588380724] [2023-11-29 01:15:53,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588380724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:53,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340968154] [2023-11-29 01:15:53,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:15:53,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:53,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:53,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:15:53,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-29 01:15:53,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:53,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 01:15:53,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:53,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340968154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:55,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 111 [2023-11-29 01:15:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143740754] [2023-11-29 01:15:55,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-11-29 01:15:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-11-29 01:15:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2310, Invalid=10346, Unknown=0, NotChecked=0, Total=12656 [2023-11-29 01:15:55,050 INFO L87 Difference]: Start difference. First operand 730 states and 810 transitions. Second operand has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 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) [2023-11-29 01:15:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:58,874 INFO L93 Difference]: Finished difference Result 1756 states and 1932 transitions. [2023-11-29 01:15:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-11-29 01:15:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 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 85 [2023-11-29 01:15:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:58,881 INFO L225 Difference]: With dead ends: 1756 [2023-11-29 01:15:58,881 INFO L226 Difference]: Without dead ends: 1675 [2023-11-29 01:15:58,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15729 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=8856, Invalid=33374, Unknown=0, NotChecked=0, Total=42230 [2023-11-29 01:15:58,883 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 782 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:58,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 147 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:15:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-11-29 01:15:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 956. [2023-11-29 01:15:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 1.1172774869109947) internal successors, (1067), 955 states have internal predecessors, (1067), 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) [2023-11-29 01:15:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1067 transitions. [2023-11-29 01:15:59,029 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1067 transitions. Word has length 85 [2023-11-29 01:15:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1067 transitions. [2023-11-29 01:15:59,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 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) [2023-11-29 01:15:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1067 transitions. [2023-11-29 01:15:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:15:59,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:59,031 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1] [2023-11-29 01:15:59,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:15:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:59,232 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:15:59,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2085752449, now seen corresponding path program 2 times [2023-11-29 01:15:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203275228] [2023-11-29 01:15:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203275228] [2023-11-29 01:16:00,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203275228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:00,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863899665] [2023-11-29 01:16:00,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:16:00,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:00,299 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:00,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:16:00,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:16:00,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:00,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 01:16:00,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:01,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863899665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:02,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:02,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2023-11-29 01:16:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279165610] [2023-11-29 01:16:02,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:02,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-11-29 01:16:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-11-29 01:16:02,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2680, Invalid=11362, Unknown=0, NotChecked=0, Total=14042 [2023-11-29 01:16:02,756 INFO L87 Difference]: Start difference. First operand 956 states and 1067 transitions. Second operand has 119 states, 118 states have (on average 2.3389830508474576) internal successors, (276), 118 states have internal predecessors, (276), 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) [2023-11-29 01:16:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:07,886 INFO L93 Difference]: Finished difference Result 2590 states and 2937 transitions. [2023-11-29 01:16:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-11-29 01:16:07,886 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.3389830508474576) internal successors, (276), 118 states have internal predecessors, (276), 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 92 [2023-11-29 01:16:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:07,897 INFO L225 Difference]: With dead ends: 2590 [2023-11-29 01:16:07,897 INFO L226 Difference]: Without dead ends: 2473 [2023-11-29 01:16:07,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23291 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=11989, Invalid=48281, Unknown=0, NotChecked=0, Total=60270 [2023-11-29 01:16:07,901 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1091 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:07,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 133 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:16:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-11-29 01:16:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1225. [2023-11-29 01:16:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 1.1299019607843137) internal successors, (1383), 1224 states have internal predecessors, (1383), 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) [2023-11-29 01:16:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1383 transitions. [2023-11-29 01:16:08,103 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1383 transitions. Word has length 92 [2023-11-29 01:16:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:08,103 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1383 transitions. [2023-11-29 01:16:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.3389830508474576) internal successors, (276), 118 states have internal predecessors, (276), 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) [2023-11-29 01:16:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1383 transitions. [2023-11-29 01:16:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 01:16:08,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:08,106 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-11-29 01:16:08,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:16:08,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:08,306 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:16:08,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash -73035523, now seen corresponding path program 6 times [2023-11-29 01:16:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541773073] [2023-11-29 01:16:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541773073] [2023-11-29 01:16:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541773073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435143319] [2023-11-29 01:16:09,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:16:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:09,577 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:16:09,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-11-29 01:16:09,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:09,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 01:16:09,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:11,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435143319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:13,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:13,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 147 [2023-11-29 01:16:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521395468] [2023-11-29 01:16:13,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-11-29 01:16:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-11-29 01:16:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3970, Invalid=18082, Unknown=0, NotChecked=0, Total=22052 [2023-11-29 01:16:13,228 INFO L87 Difference]: Start difference. First operand 1225 states and 1383 transitions. Second operand has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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) [2023-11-29 01:16:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:19,851 INFO L93 Difference]: Finished difference Result 3367 states and 3726 transitions. [2023-11-29 01:16:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-11-29 01:16:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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 111 [2023-11-29 01:16:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:19,864 INFO L225 Difference]: With dead ends: 3367 [2023-11-29 01:16:19,865 INFO L226 Difference]: Without dead ends: 3266 [2023-11-29 01:16:19,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29906 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=16612, Invalid=62630, Unknown=0, NotChecked=0, Total=79242 [2023-11-29 01:16:19,869 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1294 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:19,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 202 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:16:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2023-11-29 01:16:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 1491. [2023-11-29 01:16:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 1.131543624161074) internal successors, (1686), 1490 states have internal predecessors, (1686), 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) [2023-11-29 01:16:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1686 transitions. [2023-11-29 01:16:20,139 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1686 transitions. Word has length 111 [2023-11-29 01:16:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:20,139 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 1686 transitions. [2023-11-29 01:16:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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) [2023-11-29 01:16:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1686 transitions. [2023-11-29 01:16:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 01:16:20,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:20,142 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1] [2023-11-29 01:16:20,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:16:20,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 01:16:20,343 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:16:20,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1048748264, now seen corresponding path program 3 times [2023-11-29 01:16:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988880350] [2023-11-29 01:16:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 804 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988880350] [2023-11-29 01:16:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988880350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574235236] [2023-11-29 01:16:21,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:16:21,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:21,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:21,857 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:21,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:16:21,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 01:16:21,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:21,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:16:21,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2023-11-29 01:16:22,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:16:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574235236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:22,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:16:22,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [53] total 58 [2023-11-29 01:16:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451622741] [2023-11-29 01:16:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:22,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:16:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:16:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=2661, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 01:16:22,044 INFO L87 Difference]: Start difference. First operand 1491 states and 1686 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-29 01:16:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:22,405 INFO L93 Difference]: Finished difference Result 2406 states and 2715 transitions. [2023-11-29 01:16:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:16:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 126 [2023-11-29 01:16:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:22,411 INFO L225 Difference]: With dead ends: 2406 [2023-11-29 01:16:22,411 INFO L226 Difference]: Without dead ends: 1188 [2023-11-29 01:16:22,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=649, Invalid=2773, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:16:22,413 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:22,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 38 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:16:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2023-11-29 01:16:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1056. [2023-11-29 01:16:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.0909952606635072) internal successors, (1151), 1055 states have internal predecessors, (1151), 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) [2023-11-29 01:16:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1151 transitions. [2023-11-29 01:16:22,649 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1151 transitions. Word has length 126 [2023-11-29 01:16:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:22,649 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1151 transitions. [2023-11-29 01:16:22,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-29 01:16:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1151 transitions. [2023-11-29 01:16:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 01:16:22,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:22,652 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 11, 11, 11, 11, 3, 1, 1, 1, 1] [2023-11-29 01:16:22,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:16:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 01:16:22,852 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:16:22,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash -538534354, now seen corresponding path program 4 times [2023-11-29 01:16:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767511431] [2023-11-29 01:16:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767511431] [2023-11-29 01:16:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767511431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108589514] [2023-11-29 01:16:24,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:16:24,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:24,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:24,234 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:24,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:16:24,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:16:24,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:24,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 01:16:24,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:26,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108589514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:28,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 159 [2023-11-29 01:16:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317809714] [2023-11-29 01:16:28,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:28,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2023-11-29 01:16:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2023-11-29 01:16:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4566, Invalid=21194, Unknown=0, NotChecked=0, Total=25760 [2023-11-29 01:16:28,351 INFO L87 Difference]: Start difference. First operand 1056 states and 1151 transitions. Second operand has 161 states, 160 states have (on average 2.475) internal successors, (396), 160 states have internal predecessors, (396), 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) [2023-11-29 01:16:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:35,021 INFO L93 Difference]: Finished difference Result 4210 states and 4548 transitions. [2023-11-29 01:16:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-11-29 01:16:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 160 states have (on average 2.475) internal successors, (396), 160 states have internal predecessors, (396), 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 132 [2023-11-29 01:16:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:35,035 INFO L225 Difference]: With dead ends: 4210 [2023-11-29 01:16:35,035 INFO L226 Difference]: Without dead ends: 4139 [2023-11-29 01:16:35,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36800 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=18699, Invalid=75857, Unknown=0, NotChecked=0, Total=94556 [2023-11-29 01:16:35,039 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1224 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:35,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 183 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:16:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2023-11-29 01:16:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 1348. [2023-11-29 01:16:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 1.0942835931700075) internal successors, (1474), 1347 states have internal predecessors, (1474), 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) [2023-11-29 01:16:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1474 transitions. [2023-11-29 01:16:35,288 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1474 transitions. Word has length 132 [2023-11-29 01:16:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:35,288 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1474 transitions. [2023-11-29 01:16:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 160 states have (on average 2.475) internal successors, (396), 160 states have internal predecessors, (396), 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) [2023-11-29 01:16:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1474 transitions. [2023-11-29 01:16:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 01:16:35,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:35,290 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 16, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-11-29 01:16:35,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:16:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:16:35,491 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:16:35,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1404490285, now seen corresponding path program 7 times [2023-11-29 01:16:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955020478] [2023-11-29 01:16:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:37,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955020478] [2023-11-29 01:16:37,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955020478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:37,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882363039] [2023-11-29 01:16:37,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:16:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:37,204 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:16:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:37,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 01:16:37,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:39,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882363039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:42,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 195 [2023-11-29 01:16:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218477836] [2023-11-29 01:16:42,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:42,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-11-29 01:16:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-11-29 01:16:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6930, Invalid=31682, Unknown=0, NotChecked=0, Total=38612 [2023-11-29 01:16:42,832 INFO L87 Difference]: Start difference. First operand 1348 states and 1474 transitions. Second operand has 197 states, 196 states have (on average 2.2193877551020407) internal successors, (435), 196 states have internal predecessors, (435), 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) [2023-11-29 01:16:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:55,570 INFO L93 Difference]: Finished difference Result 4227 states and 4486 transitions. [2023-11-29 01:16:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2023-11-29 01:16:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 196 states have (on average 2.2193877551020407) internal successors, (435), 196 states have internal predecessors, (435), 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 145 [2023-11-29 01:16:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:55,584 INFO L225 Difference]: With dead ends: 4227 [2023-11-29 01:16:55,585 INFO L226 Difference]: Without dead ends: 4178 [2023-11-29 01:16:55,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57414 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=32361, Invalid=117021, Unknown=0, NotChecked=0, Total=149382 [2023-11-29 01:16:55,595 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2015 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:55,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 240 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:16:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2023-11-29 01:16:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 1758. [2023-11-29 01:16:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 1.0927717700626067) internal successors, (1920), 1757 states have internal predecessors, (1920), 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) [2023-11-29 01:16:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 1920 transitions. [2023-11-29 01:16:56,083 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 1920 transitions. Word has length 145 [2023-11-29 01:16:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:56,084 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 1920 transitions. [2023-11-29 01:16:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 196 states have (on average 2.2193877551020407) internal successors, (435), 196 states have internal predecessors, (435), 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) [2023-11-29 01:16:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 1920 transitions. [2023-11-29 01:16:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 01:16:56,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:56,087 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 21, 12, 12, 12, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2023-11-29 01:16:56,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:16:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:16:56,288 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:16:56,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash -114594994, now seen corresponding path program 8 times [2023-11-29 01:16:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:56,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569250126] [2023-11-29 01:16:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569250126] [2023-11-29 01:16:59,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569250126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707271021] [2023-11-29 01:16:59,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:16:59,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:59,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:59,258 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:59,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:16:59,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:16:59,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:59,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-29 01:16:59,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:02,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707271021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:07,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:17:07,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 237 [2023-11-29 01:17:07,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325390316] [2023-11-29 01:17:07,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:07,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 239 states [2023-11-29 01:17:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2023-11-29 01:17:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10288, Invalid=46594, Unknown=0, NotChecked=0, Total=56882 [2023-11-29 01:17:07,712 INFO L87 Difference]: Start difference. First operand 1758 states and 1920 transitions. Second operand has 239 states, 238 states have (on average 2.2058823529411766) internal successors, (525), 238 states have internal predecessors, (525), 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) [2023-11-29 01:17:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:17:25,003 INFO L93 Difference]: Finished difference Result 6567 states and 6954 transitions. [2023-11-29 01:17:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-11-29 01:17:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 239 states, 238 states have (on average 2.2058823529411766) internal successors, (525), 238 states have internal predecessors, (525), 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 175 [2023-11-29 01:17:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:17:25,013 INFO L225 Difference]: With dead ends: 6567 [2023-11-29 01:17:25,014 INFO L226 Difference]: Without dead ends: 6506 [2023-11-29 01:17:25,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81844 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=46491, Invalid=164649, Unknown=0, NotChecked=0, Total=211140 [2023-11-29 01:17:25,022 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2246 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:17:25,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 323 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:17:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2023-11-29 01:17:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 2241. [2023-11-29 01:17:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2240 states have (on average 1.0955357142857143) internal successors, (2454), 2240 states have internal predecessors, (2454), 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) [2023-11-29 01:17:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2454 transitions. [2023-11-29 01:17:25,619 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2454 transitions. Word has length 175 [2023-11-29 01:17:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:17:25,620 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 2454 transitions. [2023-11-29 01:17:25,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 239 states, 238 states have (on average 2.2058823529411766) internal successors, (525), 238 states have internal predecessors, (525), 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) [2023-11-29 01:17:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2454 transitions. [2023-11-29 01:17:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:17:25,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:17:25,624 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 14, 14, 14, 13, 13, 12, 12, 12, 2, 1, 1, 1, 1, 1] [2023-11-29 01:17:25,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:17:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:17:25,825 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:17:25,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 587197671, now seen corresponding path program 9 times [2023-11-29 01:17:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687795518] [2023-11-29 01:17:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:17:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 0 proven. 1662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:28,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:28,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687795518] [2023-11-29 01:17:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687795518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:17:28,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762818592] [2023-11-29 01:17:28,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:17:28,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:28,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:17:28,757 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:17:28,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:17:28,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 01:17:28,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:28,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 01:17:28,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 957 proven. 58 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2023-11-29 01:17:29,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 965 proven. 5 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2023-11-29 01:17:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762818592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:29,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:17:29,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 8, 6] total 85 [2023-11-29 01:17:29,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717509375] [2023-11-29 01:17:29,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-11-29 01:17:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-11-29 01:17:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=5863, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 01:17:29,122 INFO L87 Difference]: Start difference. First operand 2241 states and 2454 transitions. Second operand has 85 states, 85 states have (on average 2.7294117647058824) internal successors, (232), 85 states have internal predecessors, (232), 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) [2023-11-29 01:17:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:17:35,698 INFO L93 Difference]: Finished difference Result 3291 states and 3532 transitions. [2023-11-29 01:17:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-11-29 01:17:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.7294117647058824) internal successors, (232), 85 states have internal predecessors, (232), 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 183 [2023-11-29 01:17:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:17:35,701 INFO L225 Difference]: With dead ends: 3291 [2023-11-29 01:17:35,701 INFO L226 Difference]: Without dead ends: 1177 [2023-11-29 01:17:35,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11047 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7249, Invalid=37483, Unknown=0, NotChecked=0, Total=44732 [2023-11-29 01:17:35,706 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 685 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:17:35,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 147 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:17:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-11-29 01:17:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 823. [2023-11-29 01:17:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.0364963503649636) internal successors, (852), 822 states have internal predecessors, (852), 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) [2023-11-29 01:17:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 852 transitions. [2023-11-29 01:17:36,172 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 852 transitions. Word has length 183 [2023-11-29 01:17:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:17:36,173 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 852 transitions. [2023-11-29 01:17:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.7294117647058824) internal successors, (232), 85 states have internal predecessors, (232), 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) [2023-11-29 01:17:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 852 transitions. [2023-11-29 01:17:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 01:17:36,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:17:36,175 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 14, 14, 14, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1] [2023-11-29 01:17:36,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 01:17:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:17:36,376 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:17:36,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2144900482, now seen corresponding path program 10 times [2023-11-29 01:17:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21009920] [2023-11-29 01:17:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:17:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 1759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21009920] [2023-11-29 01:17:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21009920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:17:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061356195] [2023-11-29 01:17:39,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:17:39,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:39,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:17:39,138 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:17:39,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:17:39,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:17:39,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:39,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-29 01:17:39,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 1759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:42,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 1759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:17:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061356195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:47,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:17:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 237 [2023-11-29 01:17:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724242224] [2023-11-29 01:17:47,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 239 states [2023-11-29 01:17:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2023-11-29 01:17:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10080, Invalid=46802, Unknown=0, NotChecked=0, Total=56882 [2023-11-29 01:17:47,409 INFO L87 Difference]: Start difference. First operand 823 states and 852 transitions. Second operand has 239 states, 238 states have (on average 2.357142857142857) internal successors, (561), 238 states have internal predecessors, (561), 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) [2023-11-29 01:18:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:03,439 INFO L93 Difference]: Finished difference Result 2345 states and 2451 transitions. [2023-11-29 01:18:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 281 states. [2023-11-29 01:18:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 239 states, 238 states have (on average 2.357142857142857) internal successors, (561), 238 states have internal predecessors, (561), 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 187 [2023-11-29 01:18:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:03,444 INFO L225 Difference]: With dead ends: 2345 [2023-11-29 01:18:03,444 INFO L226 Difference]: Without dead ends: 2264 [2023-11-29 01:18:03,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76778 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=37854, Invalid=154428, Unknown=0, NotChecked=0, Total=192282 [2023-11-29 01:18:03,457 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1635 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:03,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 288 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:18:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2023-11-29 01:18:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 998. [2023-11-29 01:18:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.0541624874623872) internal successors, (1051), 997 states have internal predecessors, (1051), 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) [2023-11-29 01:18:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1051 transitions. [2023-11-29 01:18:03,976 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1051 transitions. Word has length 187 [2023-11-29 01:18:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:03,976 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1051 transitions. [2023-11-29 01:18:03,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 239 states, 238 states have (on average 2.357142857142857) internal successors, (561), 238 states have internal predecessors, (561), 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) [2023-11-29 01:18:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1051 transitions. [2023-11-29 01:18:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:18:03,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:03,978 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 28, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2023-11-29 01:18:03,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:18:04,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:04,179 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:18:04,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1595410266, now seen corresponding path program 11 times [2023-11-29 01:18:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442736889] [2023-11-29 01:18:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442736889] [2023-11-29 01:18:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442736889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996566820] [2023-11-29 01:18:08,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:18:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:08,420 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:08,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:18:08,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-11-29 01:18:08,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:18:08,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 97 conjunts are in the unsatisfiable core [2023-11-29 01:18:08,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:12,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996566820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:18:20,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:18:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 285 [2023-11-29 01:18:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801685211] [2023-11-29 01:18:20,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:18:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2023-11-29 01:18:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2023-11-29 01:18:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14992, Invalid=67090, Unknown=0, NotChecked=0, Total=82082 [2023-11-29 01:18:20,246 INFO L87 Difference]: Start difference. First operand 998 states and 1051 transitions. Second operand has 287 states, 286 states have (on average 2.1713286713286712) internal successors, (621), 286 states have internal predecessors, (621), 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) [2023-11-29 01:18:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:40,738 INFO L93 Difference]: Finished difference Result 3254 states and 3357 transitions. [2023-11-29 01:18:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 305 states. [2023-11-29 01:18:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 286 states have (on average 2.1713286713286712) internal successors, (621), 286 states have internal predecessors, (621), 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 207 [2023-11-29 01:18:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:40,743 INFO L225 Difference]: With dead ends: 3254 [2023-11-29 01:18:40,743 INFO L226 Difference]: Without dead ends: 3183 [2023-11-29 01:18:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97012 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=54502, Invalid=190028, Unknown=0, NotChecked=0, Total=244530 [2023-11-29 01:18:40,752 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2374 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:40,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 355 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:18:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2023-11-29 01:18:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1152. [2023-11-29 01:18:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.0469157254561252) internal successors, (1205), 1151 states have internal predecessors, (1205), 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) [2023-11-29 01:18:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1205 transitions. [2023-11-29 01:18:41,270 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1205 transitions. Word has length 207 [2023-11-29 01:18:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:41,270 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1205 transitions. [2023-11-29 01:18:41,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 286 states have (on average 2.1713286713286712) internal successors, (621), 286 states have internal predecessors, (621), 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) [2023-11-29 01:18:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1205 transitions. [2023-11-29 01:18:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 01:18:41,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:41,272 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 34, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2023-11-29 01:18:41,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:18:41,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 01:18:41,473 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:18:41,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1569301993, now seen corresponding path program 12 times [2023-11-29 01:18:41,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042163036] [2023-11-29 01:18:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:41,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3812 backedges. 0 proven. 3812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:46,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042163036] [2023-11-29 01:18:46,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042163036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:46,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131695679] [2023-11-29 01:18:46,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:18:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:46,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:46,569 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:18:46,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2023-11-29 01:18:46,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:18:46,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-29 01:18:46,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3812 backedges. 0 proven. 3812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:52,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3812 backedges. 0 proven. 3812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131695679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:01,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 339 [2023-11-29 01:19:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676738198] [2023-11-29 01:19:01,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:01,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 341 states [2023-11-29 01:19:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 341 interpolants. [2023-11-29 01:19:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21186, Invalid=94754, Unknown=0, NotChecked=0, Total=115940 [2023-11-29 01:19:01,411 INFO L87 Difference]: Start difference. First operand 1152 states and 1205 transitions. Second operand has 341 states, 340 states have (on average 2.161764705882353) internal successors, (735), 340 states have internal predecessors, (735), 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) [2023-11-29 01:19:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:19:31,485 INFO L93 Difference]: Finished difference Result 3059 states and 3196 transitions. [2023-11-29 01:19:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 363 states. [2023-11-29 01:19:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 341 states, 340 states have (on average 2.161764705882353) internal successors, (735), 340 states have internal predecessors, (735), 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 245 [2023-11-29 01:19:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:19:31,489 INFO L225 Difference]: With dead ends: 3059 [2023-11-29 01:19:31,490 INFO L226 Difference]: Without dead ends: 2970 [2023-11-29 01:19:31,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 587 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137980 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=77359, Invalid=268973, Unknown=0, NotChecked=0, Total=346332 [2023-11-29 01:19:31,503 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2948 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:19:31,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 381 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:19:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2023-11-29 01:19:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1306. [2023-11-29 01:19:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 1.0413793103448277) internal successors, (1359), 1305 states have internal predecessors, (1359), 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) [2023-11-29 01:19:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1359 transitions. [2023-11-29 01:19:32,302 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1359 transitions. Word has length 245 [2023-11-29 01:19:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:19:32,303 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1359 transitions. [2023-11-29 01:19:32,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 341 states, 340 states have (on average 2.161764705882353) internal successors, (735), 340 states have internal predecessors, (735), 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) [2023-11-29 01:19:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1359 transitions. [2023-11-29 01:19:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-11-29 01:19:32,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:19:32,306 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 27, 27, 27, 16, 16, 16, 15, 15, 12, 1, 1, 1, 1, 1] [2023-11-29 01:19:32,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:19:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 01:19:32,507 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:19:32,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2086745923, now seen corresponding path program 13 times [2023-11-29 01:19:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:32,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18113551] [2023-11-29 01:19:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 0 proven. 3562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18113551] [2023-11-29 01:19:39,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18113551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:19:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922207131] [2023-11-29 01:19:39,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:19:39,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:39,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:19:39,361 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:19:39,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:19:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:39,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 119 conjunts are in the unsatisfiable core [2023-11-29 01:19:39,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 0 proven. 3562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:46,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 0 proven. 3562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:56,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922207131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:56,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:56,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117, 117] total 351 [2023-11-29 01:19:56,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728810105] [2023-11-29 01:19:56,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:56,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 353 states [2023-11-29 01:19:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 353 interpolants. [2023-11-29 01:19:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21270, Invalid=102986, Unknown=0, NotChecked=0, Total=124256 [2023-11-29 01:19:56,552 INFO L87 Difference]: Start difference. First operand 1306 states and 1359 transitions. Second operand has 353 states, 352 states have (on average 2.2926136363636362) internal successors, (807), 352 states have internal predecessors, (807), 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) [2023-11-29 01:20:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:28,825 INFO L93 Difference]: Finished difference Result 2935 states and 3068 transitions. [2023-11-29 01:20:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2023-11-29 01:20:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 353 states, 352 states have (on average 2.2926136363636362) internal successors, (807), 352 states have internal predecessors, (807), 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 269 [2023-11-29 01:20:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:28,830 INFO L225 Difference]: With dead ends: 2935 [2023-11-29 01:20:28,830 INFO L226 Difference]: Without dead ends: 2850 [2023-11-29 01:20:28,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164315 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=82772, Invalid=327468, Unknown=0, NotChecked=0, Total=410240 [2023-11-29 01:20:28,849 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3163 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:28,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3163 Valid, 399 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:20:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-29 01:20:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1396. [2023-11-29 01:20:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 1.0473118279569893) internal successors, (1461), 1395 states have internal predecessors, (1461), 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) [2023-11-29 01:20:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1461 transitions. [2023-11-29 01:20:29,707 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1461 transitions. Word has length 269 [2023-11-29 01:20:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:29,707 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 1461 transitions. [2023-11-29 01:20:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 353 states, 352 states have (on average 2.2926136363636362) internal successors, (807), 352 states have internal predecessors, (807), 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) [2023-11-29 01:20:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1461 transitions. [2023-11-29 01:20:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 01:20:29,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:29,710 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 48, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2023-11-29 01:20:29,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:20:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 01:20:29,910 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:20:29,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1491940384, now seen corresponding path program 14 times [2023-11-29 01:20:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:29,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112544483] [2023-11-29 01:20:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6849 backedges. 0 proven. 6849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:20:40,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112544483] [2023-11-29 01:20:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112544483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075229736] [2023-11-29 01:20:40,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:20:40,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:40,031 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:40,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:20:40,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:20:40,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:20:40,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-29 01:20:40,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6849 backedges. 0 proven. 6849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:20:50,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6849 backedges. 0 proven. 6849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075229736] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:07,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:21:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147, 147] total 441 [2023-11-29 01:21:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660437194] [2023-11-29 01:21:07,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:07,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 443 states [2023-11-29 01:21:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 443 interpolants. [2023-11-29 01:21:07,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36340, Invalid=159466, Unknown=0, NotChecked=0, Total=195806 [2023-11-29 01:21:07,895 INFO L87 Difference]: Start difference. First operand 1396 states and 1461 transitions. Second operand has 443 states, 442 states have (on average 2.1380090497737556) internal successors, (945), 442 states have internal predecessors, (945), 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) [2023-11-29 01:22:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:02,191 INFO L93 Difference]: Finished difference Result 4330 states and 4509 transitions. [2023-11-29 01:22:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 469 states. [2023-11-29 01:22:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 443 states, 442 states have (on average 2.1380090497737556) internal successors, (945), 442 states have internal predecessors, (945), 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 315 [2023-11-29 01:22:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:02,197 INFO L225 Difference]: With dead ends: 4330 [2023-11-29 01:22:02,197 INFO L226 Difference]: Without dead ends: 4211 [2023-11-29 01:22:02,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232674 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=131705, Invalid=449701, Unknown=0, NotChecked=0, Total=581406 [2023-11-29 01:22:02,221 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4516 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:02,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4516 Valid, 486 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:22:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2023-11-29 01:22:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 1726. [2023-11-29 01:22:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.0382608695652173) internal successors, (1791), 1725 states have internal predecessors, (1791), 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) [2023-11-29 01:22:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 1791 transitions. [2023-11-29 01:22:03,376 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 1791 transitions. Word has length 315 [2023-11-29 01:22:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 1791 transitions. [2023-11-29 01:22:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 443 states, 442 states have (on average 2.1380090497737556) internal successors, (945), 442 states have internal predecessors, (945), 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) [2023-11-29 01:22:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 1791 transitions. [2023-11-29 01:22:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 01:22:03,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:03,380 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 35, 35, 35, 26, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2023-11-29 01:22:03,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:22:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 01:22:03,580 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:22:03,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash -528011115, now seen corresponding path program 15 times [2023-11-29 01:22:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955843609] [2023-11-29 01:22:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6376 backedges. 0 proven. 6376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955843609] [2023-11-29 01:22:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955843609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83149401] [2023-11-29 01:22:15,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:22:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:15,789 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:15,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:22:16,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-11-29 01:22:16,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:16,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 159 conjunts are in the unsatisfiable core [2023-11-29 01:22:16,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6376 backedges. 0 proven. 6376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:27,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6376 backedges. 0 proven. 6376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83149401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:44,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157, 157] total 471 [2023-11-29 01:22:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881332338] [2023-11-29 01:22:44,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 473 states [2023-11-29 01:22:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 473 interpolants. [2023-11-29 01:22:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38046, Invalid=185210, Unknown=0, NotChecked=0, Total=223256 [2023-11-29 01:22:44,245 INFO L87 Difference]: Start difference. First operand 1726 states and 1791 transitions. Second operand has 473 states, 472 states have (on average 2.2436440677966103) internal successors, (1059), 472 states have internal predecessors, (1059), 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) [2023-11-29 01:23:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:54,176 INFO L93 Difference]: Finished difference Result 4164 states and 4333 transitions. [2023-11-29 01:23:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-11-29 01:23:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 473 states, 472 states have (on average 2.2436440677966103) internal successors, (1059), 472 states have internal predecessors, (1059), 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 353 [2023-11-29 01:23:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:54,180 INFO L225 Difference]: With dead ends: 4164 [2023-11-29 01:23:54,180 INFO L226 Difference]: Without dead ends: 4055 [2023-11-29 01:23:54,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 847 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289116 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=149078, Invalid=570874, Unknown=0, NotChecked=0, Total=719952 [2023-11-29 01:23:54,208 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4164 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 3017 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:54,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4164 Valid, 541 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3017 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:23:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2023-11-29 01:23:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 1786. [2023-11-29 01:23:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 1.0414565826330533) internal successors, (1859), 1785 states have internal predecessors, (1859), 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) [2023-11-29 01:23:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 1859 transitions. [2023-11-29 01:23:55,319 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 1859 transitions. Word has length 353 [2023-11-29 01:23:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:55,320 INFO L495 AbstractCegarLoop]: Abstraction has 1786 states and 1859 transitions. [2023-11-29 01:23:55,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 473 states, 472 states have (on average 2.2436440677966103) internal successors, (1059), 472 states have internal predecessors, (1059), 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) [2023-11-29 01:23:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 1859 transitions. [2023-11-29 01:23:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 01:23:55,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:55,323 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 43, 37, 37, 37, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2023-11-29 01:23:55,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 01:23:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 01:23:55,524 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:23:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1039833105, now seen corresponding path program 16 times [2023-11-29 01:23:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318055324] [2023-11-29 01:23:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10424 backedges. 0 proven. 10424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:12,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:12,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318055324] [2023-11-29 01:24:12,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318055324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:12,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856639561] [2023-11-29 01:24:12,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:24:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:12,470 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:24:12,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:24:12,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:12,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 199 conjunts are in the unsatisfiable core [2023-11-29 01:24:12,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10424 backedges. 0 proven. 10424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:28,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10424 backedges. 0 proven. 10424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856639561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:53,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197, 197] total 591 [2023-11-29 01:24:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457749143] [2023-11-29 01:24:53,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:53,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 593 states [2023-11-29 01:24:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 593 interpolants. [2023-11-29 01:24:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60550, Invalid=290506, Unknown=0, NotChecked=0, Total=351056 [2023-11-29 01:24:53,625 INFO L87 Difference]: Start difference. First operand 1786 states and 1859 transitions. Second operand has 593 states, 592 states have (on average 2.204391891891892) internal successors, (1305), 592 states have internal predecessors, (1305), 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) [2023-11-29 01:26:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:51,017 INFO L93 Difference]: Finished difference Result 5436 states and 5641 transitions. [2023-11-29 01:26:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 659 states. [2023-11-29 01:26:51,018 INFO L78 Accepts]: Start accepts. Automaton has has 593 states, 592 states have (on average 2.204391891891892) internal successors, (1305), 592 states have internal predecessors, (1305), 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 435 [2023-11-29 01:26:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:51,021 INFO L225 Difference]: With dead ends: 5436 [2023-11-29 01:26:51,021 INFO L226 Difference]: Without dead ends: 5299 [2023-11-29 01:26:51,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1525 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 1051 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446234 ImplicationChecksByTransitivity, 88.5s TimeCoverageRelationStatistics Valid=235255, Invalid=872501, Unknown=0, NotChecked=0, Total=1107756 [2023-11-29 01:26:51,068 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6088 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6088 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:51,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6088 Valid, 647 Invalid, 3625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 01:26:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2023-11-29 01:26:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 1926. [2023-11-29 01:26:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1925 states have (on average 1.0405194805194806) internal successors, (2003), 1925 states have internal predecessors, (2003), 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) [2023-11-29 01:26:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2003 transitions. [2023-11-29 01:26:52,275 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2003 transitions. Word has length 435 [2023-11-29 01:26:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 1926 states and 2003 transitions. [2023-11-29 01:26:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 593 states, 592 states have (on average 2.204391891891892) internal successors, (1305), 592 states have internal predecessors, (1305), 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) [2023-11-29 01:26:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2003 transitions. [2023-11-29 01:26:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-11-29 01:26:52,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:52,280 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:52,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:52,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 01:26:52,480 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:26:52,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1537760684, now seen corresponding path program 3 times [2023-11-29 01:26:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:52,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710823797] [2023-11-29 01:26:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30629 backedges. 0 proven. 30629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710823797] [2023-11-29 01:27:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710823797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328314872] [2023-11-29 01:27:22,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:27:22,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:22,093 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:22,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2138d3-8b96-4bea-94b5-dcb84357e856/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:27:22,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 125 check-sat command(s) [2023-11-29 01:27:22,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:22,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 253 conjunts are in the unsatisfiable core [2023-11-29 01:27:22,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30629 backedges. 0 proven. 30629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:46,332 INFO L327 TraceCheckSpWp]: Computing backward predicates...