./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:35:57,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:35:57,751 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 16:35:57,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:35:57,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:35:57,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:35:57,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:35:57,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:35:57,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:35:57,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:35:57,783 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:35:57,783 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:35:57,784 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:35:57,784 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:35:57,785 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:35:57,785 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:35:57,786 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:35:57,786 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:35:57,787 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:35:57,787 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:35:57,788 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:35:57,788 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:35:57,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:35:57,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:35:57,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:35:57,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:35:57,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:35:57,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:35:57,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:35:57,792 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:35:57,792 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:35:57,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:35:57,793 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:35:57,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:35:57,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:35:57,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:35:57,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:35:57,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:35:57,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:35:57,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:35:57,795 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:35:57,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:35:57,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:35:57,796 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:35:57,796 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:35:57,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:35:57,796 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2023-12-02 16:35:58,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:35:58,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:35:58,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:35:58,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:35:58,049 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:35:58,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-12-02 16:36:00,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:36:00,986 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:36:00,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-12-02 16:36:00,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/data/c90d4bf42/9681604a4f784803924fdfc5a2507630/FLAG669895772 [2023-12-02 16:36:01,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/data/c90d4bf42/9681604a4f784803924fdfc5a2507630 [2023-12-02 16:36:01,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:36:01,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:36:01,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:36:01,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:36:01,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:36:01,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fedbad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01, skipping insertion in model container [2023-12-02 16:36:01,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:36:01,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:36:01,195 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:36:01,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:36:01,231 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:36:01,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01 WrapperNode [2023-12-02 16:36:01,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:36:01,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:36:01,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:36:01,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:36:01,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,274 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-12-02 16:36:01,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:36:01,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:36:01,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:36:01,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:36:01,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:36:01,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:36:01,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:36:01,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:36:01,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (1/1) ... [2023-12-02 16:36:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:36:01,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:01,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:36:01,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:36:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:36:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:36:01,425 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:36:01,426 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:36:01,500 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:36:01,521 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:36:01,521 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:36:01,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:01 BoogieIcfgContainer [2023-12-02 16:36:01,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:36:01,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:36:01,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:36:01,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:36:01,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:36:01" (1/3) ... [2023-12-02 16:36:01,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b836e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:36:01, skipping insertion in model container [2023-12-02 16:36:01,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:01" (2/3) ... [2023-12-02 16:36:01,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b836e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:36:01, skipping insertion in model container [2023-12-02 16:36:01,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:01" (3/3) ... [2023-12-02 16:36:01,532 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2023-12-02 16:36:01,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:36:01,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 16:36:01,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:36:01,592 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=FINITE_AUTOMATA, 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;@64efad8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:36:01,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 16:36:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:36:01,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:01,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:36:01,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:01,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2066791, now seen corresponding path program 1 times [2023-12-02 16:36:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:01,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073026911] [2023-12-02 16:36:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:01,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:01,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073026911] [2023-12-02 16:36:01,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073026911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:36:01,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:36:01,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:36:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488052899] [2023-12-02 16:36:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:01,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:36:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:01,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:36:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:01,775 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2023-12-02 16:36:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:01,817 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-12-02 16:36:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:36:01,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2023-12-02 16:36:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:01,826 INFO L225 Difference]: With dead ends: 39 [2023-12-02 16:36:01,826 INFO L226 Difference]: Without dead ends: 23 [2023-12-02 16:36:01,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:01,831 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:01,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-02 16:36:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-12-02 16:36:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 20 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) [2023-12-02 16:36:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-02 16:36:01,862 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 4 [2023-12-02 16:36:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:01,863 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-02 16:36:01,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2023-12-02 16:36:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-02 16:36:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:36:01,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:01,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:36:01,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:36:01,865 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)] === [2023-12-02 16:36:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2066599, now seen corresponding path program 1 times [2023-12-02 16:36:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325833112] [2023-12-02 16:36:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:01,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:01,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325833112] [2023-12-02 16:36:01,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325833112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:36:01,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:36:01,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:36:01,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511072174] [2023-12-02 16:36:01,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:01,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:36:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:36:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:01,900 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:01,921 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-12-02 16:36:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:36:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 16:36:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:01,923 INFO L225 Difference]: With dead ends: 26 [2023-12-02 16:36:01,923 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 16:36:01,924 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 [2023-12-02 16:36:01,925 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:01,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 16:36:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2023-12-02 16:36:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4666666666666666) 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) [2023-12-02 16:36:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-12-02 16:36:01,932 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2023-12-02 16:36:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:01,932 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-12-02 16:36:01,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-12-02 16:36:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:36:01,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:01,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:36:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:36:01,934 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)] === [2023-12-02 16:36:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 64064617, now seen corresponding path program 1 times [2023-12-02 16:36:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662467917] [2023-12-02 16:36:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:01,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662467917] [2023-12-02 16:36:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662467917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:36:01,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:36:01,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:36:01,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507749649] [2023-12-02 16:36:01,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:01,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:36:01,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:36:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:01,967 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:01,986 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-12-02 16:36:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:36:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 16:36:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:01,988 INFO L225 Difference]: With dead ends: 20 [2023-12-02 16:36:01,988 INFO L226 Difference]: Without dead ends: 19 [2023-12-02 16:36:01,988 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 [2023-12-02 16:36:01,990 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:01,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-02 16:36:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-02 16:36:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 18 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) [2023-12-02 16:36:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-12-02 16:36:01,996 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2023-12-02 16:36:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:01,997 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-12-02 16:36:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-12-02 16:36:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:36:01,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:01,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:36:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:36:01,998 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)] === [2023-12-02 16:36:01,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1986003184, now seen corresponding path program 1 times [2023-12-02 16:36:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720785594] [2023-12-02 16:36:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:02,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720785594] [2023-12-02 16:36:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720785594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:36:02,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:36:02,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:36:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445058983] [2023-12-02 16:36:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:02,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:36:02,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:36:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:02,042 INFO L87 Difference]: Start difference. First operand 19 states and 21 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) [2023-12-02 16:36:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:02,056 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2023-12-02 16:36:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:36:02,056 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 [2023-12-02 16:36:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:02,057 INFO L225 Difference]: With dead ends: 19 [2023-12-02 16:36:02,057 INFO L226 Difference]: Without dead ends: 18 [2023-12-02 16:36:02,058 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 [2023-12-02 16:36:02,059 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:02,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-02 16:36:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-02 16:36:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-12-02 16:36:02,065 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2023-12-02 16:36:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:02,066 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-12-02 16:36:02,066 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) [2023-12-02 16:36:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-12-02 16:36:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:36:02,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:02,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:36:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:36:02,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 578676022, now seen corresponding path program 1 times [2023-12-02 16:36:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534759036] [2023-12-02 16:36:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:02,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:02,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534759036] [2023-12-02 16:36:02,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534759036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875064327] [2023-12-02 16:36:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:02,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:02,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:02,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:36:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:02,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:36:02,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:02,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:02,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875064327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [140132626] [2023-12-02 16:36:02,300 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:02,301 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:02,304 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:02,309 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:02,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:02,502 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:02,626 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '298#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483649 |ULTIMATE.start_main_~y~0#1|) (<= 51 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:02,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:02,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-12-02 16:36:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169014577] [2023-12-02 16:36:02,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:36:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:36:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:36:02,629 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2023-12-02 16:36:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:02,727 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-12-02 16:36:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:36:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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 [2023-12-02 16:36:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:02,728 INFO L225 Difference]: With dead ends: 34 [2023-12-02 16:36:02,728 INFO L226 Difference]: Without dead ends: 23 [2023-12-02 16:36:02,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:36:02,730 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:02,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-02 16:36:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-02 16:36:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-02 16:36:02,736 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2023-12-02 16:36:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:02,737 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-02 16:36:02,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2023-12-02 16:36:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-02 16:36:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:36:02,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:02,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1] [2023-12-02 16:36:02,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:36:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:02,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:02,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -358707657, now seen corresponding path program 1 times [2023-12-02 16:36:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:02,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733236914] [2023-12-02 16:36:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:03,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733236914] [2023-12-02 16:36:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733236914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875641882] [2023-12-02 16:36:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:03,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:03,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:03,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:03,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:36:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:03,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:36:03,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:03,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:03,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875641882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025328795] [2023-12-02 16:36:03,137 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:36:03,137 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:03,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:03,138 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:03,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:03,219 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:03,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '480#(and (<= 2147483647 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:03,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:03,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-02 16:36:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699776367] [2023-12-02 16:36:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:36:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:36:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:36:03,321 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2023-12-02 16:36:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:03,384 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2023-12-02 16:36:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:36:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 17 [2023-12-02 16:36:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:03,386 INFO L225 Difference]: With dead ends: 78 [2023-12-02 16:36:03,386 INFO L226 Difference]: Without dead ends: 77 [2023-12-02 16:36:03,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:36:03,388 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:03,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:36:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-02 16:36:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2023-12-02 16:36:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2023-12-02 16:36:03,398 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 17 [2023-12-02 16:36:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:03,399 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2023-12-02 16:36:03,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2023-12-02 16:36:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2023-12-02 16:36:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 16:36:03,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:03,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 16:36:03,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:36:03,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:36:03,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:03,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1114947233, now seen corresponding path program 1 times [2023-12-02 16:36:03,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:03,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493541345] [2023-12-02 16:36:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:03,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:36:03,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493541345] [2023-12-02 16:36:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493541345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239391864] [2023-12-02 16:36:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:03,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:03,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:03,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:03,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:36:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:03,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:36:03,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:03,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239391864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [739933065] [2023-12-02 16:36:03,782 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:03,782 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:03,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:03,783 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:03,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:03,885 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:03,988 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '766#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:03,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:03,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-12-02 16:36:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086873257] [2023-12-02 16:36:03,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:03,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:36:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:36:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:36:03,990 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:04,046 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2023-12-02 16:36:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:36:04,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 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 19 [2023-12-02 16:36:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:04,049 INFO L225 Difference]: With dead ends: 159 [2023-12-02 16:36:04,049 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 16:36:04,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:36:04,051 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:04,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 16:36:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-02 16:36:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.145631067961165) internal successors, (118), 104 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) [2023-12-02 16:36:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2023-12-02 16:36:04,064 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 19 [2023-12-02 16:36:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:04,065 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2023-12-02 16:36:04,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2023-12-02 16:36:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 16:36:04,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:04,067 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1] [2023-12-02 16:36:04,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:36:04,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 16:36:04,267 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)] === [2023-12-02 16:36:04,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1789312301, now seen corresponding path program 2 times [2023-12-02 16:36:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689389299] [2023-12-02 16:36:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:04,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:04,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689389299] [2023-12-02 16:36:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689389299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674379321] [2023-12-02 16:36:04,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:36:04,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:04,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:04,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:36:04,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 16:36:04,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:04,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:36:04,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:04,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:04,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674379321] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242921709] [2023-12-02 16:36:04,715 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:36:04,715 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:04,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:04,716 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:04,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:04,778 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:04,942 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1332#(and (<= 2147483647 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:04,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:04,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:04,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-12-02 16:36:04,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165967270] [2023-12-02 16:36:04,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 16:36:04,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 16:36:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:36:04,945 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:05,090 INFO L93 Difference]: Finished difference Result 562 states and 655 transitions. [2023-12-02 16:36:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:36:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 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 41 [2023-12-02 16:36:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:05,095 INFO L225 Difference]: With dead ends: 562 [2023-12-02 16:36:05,095 INFO L226 Difference]: Without dead ends: 561 [2023-12-02 16:36:05,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:36:05,097 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:05,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 76 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:36:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-02 16:36:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 369. [2023-12-02 16:36:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 367 states have (on average 1.1634877384196185) internal successors, (427), 368 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 427 transitions. [2023-12-02 16:36:05,134 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 427 transitions. Word has length 41 [2023-12-02 16:36:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:05,134 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 427 transitions. [2023-12-02 16:36:05,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 427 transitions. [2023-12-02 16:36:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 16:36:05,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:05,137 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2023-12-02 16:36:05,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:36:05,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:36:05,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:05,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash -419532703, now seen corresponding path program 2 times [2023-12-02 16:36:05,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:05,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382233739] [2023-12-02 16:36:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:05,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:05,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382233739] [2023-12-02 16:36:05,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382233739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:05,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687045006] [2023-12-02 16:36:05,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:36:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:05,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:05,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:36:05,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:36:05,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:05,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:36:05,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:05,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:05,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687045006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:05,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114971878] [2023-12-02 16:36:05,634 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:05,634 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:05,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:05,635 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:05,635 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:05,713 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:05,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2745#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:05,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:05,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-02 16:36:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448888139] [2023-12-02 16:36:05,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:36:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:36:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:36:05,846 INFO L87 Difference]: Start difference. First operand 369 states and 427 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:05,899 INFO L93 Difference]: Finished difference Result 595 states and 690 transitions. [2023-12-02 16:36:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:36:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 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 55 [2023-12-02 16:36:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:05,901 INFO L225 Difference]: With dead ends: 595 [2023-12-02 16:36:05,902 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 16:36:05,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:36:05,904 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:05,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:36:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 16:36:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-12-02 16:36:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 246 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 278 transitions. [2023-12-02 16:36:05,917 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 278 transitions. Word has length 55 [2023-12-02 16:36:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:05,917 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 278 transitions. [2023-12-02 16:36:05,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 278 transitions. [2023-12-02 16:36:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 16:36:05,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:05,922 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1] [2023-12-02 16:36:05,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:36:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:06,126 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:06,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1132236789, now seen corresponding path program 3 times [2023-12-02 16:36:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:06,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693606862] [2023-12-02 16:36:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:06,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:06,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693606862] [2023-12-02 16:36:06,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693606862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:06,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165841531] [2023-12-02 16:36:06,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:36:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:06,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:36:06,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:36:06,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:06,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:36:06,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:06,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165841531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2073589253] [2023-12-02 16:36:07,027 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:36:07,027 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:07,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:07,027 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:07,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:07,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:07,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4286#(and (<= 2147483647 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:07,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:07,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:07,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-12-02 16:36:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427341910] [2023-12-02 16:36:07,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:07,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 16:36:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 16:36:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=821, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:36:07,401 INFO L87 Difference]: Start difference. First operand 247 states and 278 transitions. Second operand has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:07,692 INFO L93 Difference]: Finished difference Result 2228 states and 2599 transitions. [2023-12-02 16:36:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 16:36:07,693 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 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 89 [2023-12-02 16:36:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:07,703 INFO L225 Difference]: With dead ends: 2228 [2023-12-02 16:36:07,703 INFO L226 Difference]: Without dead ends: 2227 [2023-12-02 16:36:07,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 230 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=511, Invalid=821, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:36:07,705 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 183 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:07,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 181 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:36:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2023-12-02 16:36:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 949. [2023-12-02 16:36:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 947 states have (on average 1.1647307286166844) internal successors, (1103), 948 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1103 transitions. [2023-12-02 16:36:07,749 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1103 transitions. Word has length 89 [2023-12-02 16:36:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:07,750 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1103 transitions. [2023-12-02 16:36:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1103 transitions. [2023-12-02 16:36:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 16:36:07,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:07,753 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 10, 10, 10, 5, 5, 5, 1, 1] [2023-12-02 16:36:07,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 16:36:07,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:36:07,956 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)] === [2023-12-02 16:36:07,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -947455925, now seen corresponding path program 3 times [2023-12-02 16:36:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036167297] [2023-12-02 16:36:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:08,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036167297] [2023-12-02 16:36:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036167297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671006786] [2023-12-02 16:36:08,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:36:08,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:08,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:08,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:36:08,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:36:08,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:08,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:36:08,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:08,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671006786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566473413] [2023-12-02 16:36:08,499 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:08,500 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:08,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:08,500 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:08,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:08,576 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:08,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8512#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:08,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:08,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-12-02 16:36:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239724435] [2023-12-02 16:36:08,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 16:36:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 16:36:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:36:08,827 INFO L87 Difference]: Start difference. First operand 949 states and 1103 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:08,926 INFO L93 Difference]: Finished difference Result 1483 states and 1728 transitions. [2023-12-02 16:36:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:36:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 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 91 [2023-12-02 16:36:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:08,930 INFO L225 Difference]: With dead ends: 1483 [2023-12-02 16:36:08,931 INFO L226 Difference]: Without dead ends: 591 [2023-12-02 16:36:08,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 244 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:36:08,933 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:08,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:36:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-02 16:36:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2023-12-02 16:36:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.137521222410866) internal successors, (670), 590 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 670 transitions. [2023-12-02 16:36:08,959 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 670 transitions. Word has length 91 [2023-12-02 16:36:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:08,959 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 670 transitions. [2023-12-02 16:36:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 670 transitions. [2023-12-02 16:36:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-02 16:36:08,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:08,962 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 22, 22, 22, 5, 5, 5, 1, 1] [2023-12-02 16:36:08,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:36:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 16:36:09,163 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)] === [2023-12-02 16:36:09,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1278869791, now seen corresponding path program 4 times [2023-12-02 16:36:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535389783] [2023-12-02 16:36:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:09,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535389783] [2023-12-02 16:36:09,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535389783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10396549] [2023-12-02 16:36:09,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:36:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:09,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:36:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:10,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 16:36:10,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:10,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10396549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:10,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802428560] [2023-12-02 16:36:10,985 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:10,985 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:10,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:10,986 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:10,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:11,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:11,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11929#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:11,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:11,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:11,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-12-02 16:36:11,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779921962] [2023-12-02 16:36:11,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 16:36:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 16:36:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 16:36:11,575 INFO L87 Difference]: Start difference. First operand 591 states and 670 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:11,763 INFO L93 Difference]: Finished difference Result 786 states and 894 transitions. [2023-12-02 16:36:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 16:36:11,764 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 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 163 [2023-12-02 16:36:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:11,766 INFO L225 Difference]: With dead ends: 786 [2023-12-02 16:36:11,766 INFO L226 Difference]: Without dead ends: 324 [2023-12-02 16:36:11,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 436 SyntacticMatches, 22 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 16:36:11,769 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:11,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 172 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:36:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-02 16:36:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 309. [2023-12-02 16:36:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0716612377850163) internal successors, (329), 308 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) [2023-12-02 16:36:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 329 transitions. [2023-12-02 16:36:11,781 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 329 transitions. Word has length 163 [2023-12-02 16:36:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:11,781 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 329 transitions. [2023-12-02 16:36:11,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 329 transitions. [2023-12-02 16:36:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-02 16:36:11,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:11,784 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1] [2023-12-02 16:36:11,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 16:36:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:11,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:11,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1858413957, now seen corresponding path program 4 times [2023-12-02 16:36:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553369886] [2023-12-02 16:36:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:12,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553369886] [2023-12-02 16:36:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553369886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798574075] [2023-12-02 16:36:12,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:36:12,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:12,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:12,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:12,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:36:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:12,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 16:36:12,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:13,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:14,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798574075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:14,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [320592588] [2023-12-02 16:36:14,204 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:36:14,204 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:14,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:14,205 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:14,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:14,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:14,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14370#(and (<= 2147483647 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:14,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:14,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:14,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2023-12-02 16:36:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141411644] [2023-12-02 16:36:14,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-02 16:36:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:14,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-02 16:36:14,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2661, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 16:36:14,986 INFO L87 Difference]: Start difference. First operand 309 states and 329 transitions. Second operand has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:15,414 INFO L93 Difference]: Finished difference Result 1314 states and 1508 transitions. [2023-12-02 16:36:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-02 16:36:15,415 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 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 185 [2023-12-02 16:36:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:15,421 INFO L225 Difference]: With dead ends: 1314 [2023-12-02 16:36:15,421 INFO L226 Difference]: Without dead ends: 1313 [2023-12-02 16:36:15,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 486 SyntacticMatches, 31 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3280 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2031, Invalid=2661, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 16:36:15,424 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 164 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:15,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 382 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:36:15,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-12-02 16:36:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1279. [2023-12-02 16:36:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1277 states have (on average 1.1386061080657792) internal successors, (1454), 1278 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1454 transitions. [2023-12-02 16:36:15,468 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1454 transitions. Word has length 185 [2023-12-02 16:36:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:15,469 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1454 transitions. [2023-12-02 16:36:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1454 transitions. [2023-12-02 16:36:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-02 16:36:15,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:15,474 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 46, 46, 46, 5, 5, 5, 1, 1] [2023-12-02 16:36:15,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 16:36:15,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:15,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 829290183, now seen corresponding path program 5 times [2023-12-02 16:36:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745301038] [2023-12-02 16:36:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 836 proven. 6302 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:17,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745301038] [2023-12-02 16:36:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745301038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704709081] [2023-12-02 16:36:17,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:36:17,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:17,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:36:17,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:36:17,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:17,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:36:17,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 1090 proven. 70 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2023-12-02 16:36:17,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 1090 proven. 70 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2023-12-02 16:36:18,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704709081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:18,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2067274247] [2023-12-02 16:36:18,136 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:18,136 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:18,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:18,137 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:18,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:18,209 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:19,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19255#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:19,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:19,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 61 [2023-12-02 16:36:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328117378] [2023-12-02 16:36:19,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:19,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-02 16:36:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-02 16:36:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1867, Invalid=2689, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 16:36:19,698 INFO L87 Difference]: Start difference. First operand 1279 states and 1454 transitions. Second operand has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:20,001 INFO L93 Difference]: Finished difference Result 3277 states and 3958 transitions. [2023-12-02 16:36:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-02 16:36:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 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 307 [2023-12-02 16:36:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:20,011 INFO L225 Difference]: With dead ends: 3277 [2023-12-02 16:36:20,016 INFO L226 Difference]: Without dead ends: 2271 [2023-12-02 16:36:20,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 855 SyntacticMatches, 46 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3720 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1867, Invalid=2689, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 16:36:20,020 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:20,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 194 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:36:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2023-12-02 16:36:20,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2271. [2023-12-02 16:36:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2269 states have (on average 1.148964301454385) internal successors, (2607), 2270 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2607 transitions. [2023-12-02 16:36:20,080 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2607 transitions. Word has length 307 [2023-12-02 16:36:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:20,080 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 2607 transitions. [2023-12-02 16:36:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2607 transitions. [2023-12-02 16:36:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-02 16:36:20,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:20,085 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 48, 48, 48, 12, 12, 12, 1, 1] [2023-12-02 16:36:20,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 16:36:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:20,286 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)] === [2023-12-02 16:36:20,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1306662320, now seen corresponding path program 6 times [2023-12-02 16:36:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:20,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072508657] [2023-12-02 16:36:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-02 16:36:22,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072508657] [2023-12-02 16:36:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072508657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703403493] [2023-12-02 16:36:22,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:36:22,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:22,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:22,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:22,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:36:22,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:36:22,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:22,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-02 16:36:22,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-02 16:36:22,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-02 16:36:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703403493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [436007194] [2023-12-02 16:36:23,499 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:23,499 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:23,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:23,500 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:23,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:23,558 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:25,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27902#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:25,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:25,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2023-12-02 16:36:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858965096] [2023-12-02 16:36:25,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 16:36:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 16:36:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=2136, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 16:36:25,176 INFO L87 Difference]: Start difference. First operand 2271 states and 2607 transitions. Second operand has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:25,373 INFO L93 Difference]: Finished difference Result 4275 states and 4950 transitions. [2023-12-02 16:36:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 16:36:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 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 361 [2023-12-02 16:36:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:25,382 INFO L225 Difference]: With dead ends: 4275 [2023-12-02 16:36:25,382 INFO L226 Difference]: Without dead ends: 2289 [2023-12-02 16:36:25,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 978 SyntacticMatches, 95 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4034 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1404, Invalid=2136, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 16:36:25,386 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:25,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 177 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:36:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2023-12-02 16:36:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2023-12-02 16:36:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.1477918670747704) internal successors, (2625), 2288 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2625 transitions. [2023-12-02 16:36:25,487 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2625 transitions. Word has length 361 [2023-12-02 16:36:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:25,488 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 2625 transitions. [2023-12-02 16:36:25,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2625 transitions. [2023-12-02 16:36:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-02 16:36:25,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:25,492 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1] [2023-12-02 16:36:25,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:36:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:25,693 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:25,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1330253989, now seen corresponding path program 5 times [2023-12-02 16:36:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888250666] [2023-12-02 16:36:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:28,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888250666] [2023-12-02 16:36:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888250666] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531728175] [2023-12-02 16:36:28,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:36:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:28,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:28,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:28,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 16:36:28,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2023-12-02 16:36:28,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:36:28,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 16:36:28,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:28,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531728175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344793652] [2023-12-02 16:36:32,708 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:36:32,708 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:32,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:32,708 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:32,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:32,737 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:35,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37910#(and (<= 2147483647 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 16:36:35,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:35,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2023-12-02 16:36:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392486235] [2023-12-02 16:36:35,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-02 16:36:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-02 16:36:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8143, Invalid=9413, Unknown=0, NotChecked=0, Total=17556 [2023-12-02 16:36:35,092 INFO L87 Difference]: Start difference. First operand 2289 states and 2625 transitions. Second operand has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:38,598 INFO L93 Difference]: Finished difference Result 70292 states and 82176 transitions. [2023-12-02 16:36:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-02 16:36:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 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 377 [2023-12-02 16:36:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:38,757 INFO L225 Difference]: With dead ends: 70292 [2023-12-02 16:36:38,758 INFO L226 Difference]: Without dead ends: 70291 [2023-12-02 16:36:38,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 998 SyntacticMatches, 63 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12720 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=8143, Invalid=9413, Unknown=0, NotChecked=0, Total=17556 [2023-12-02 16:36:38,771 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 918 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:38,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 894 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:36:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70291 states. [2023-12-02 16:36:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70291 to 9065. [2023-12-02 16:36:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9063 states have (on average 1.164956416197727) internal successors, (10558), 9064 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 10558 transitions. [2023-12-02 16:36:39,863 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 10558 transitions. Word has length 377 [2023-12-02 16:36:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:39,863 INFO L495 AbstractCegarLoop]: Abstraction has 9065 states and 10558 transitions. [2023-12-02 16:36:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 10558 transitions. [2023-12-02 16:36:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-02 16:36:39,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:39,867 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 51, 51, 51, 12, 12, 12, 1, 1] [2023-12-02 16:36:39,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 16:36:40,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 16:36:40,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:40,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1664317445, now seen corresponding path program 7 times [2023-12-02 16:36:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:40,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742290119] [2023-12-02 16:36:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:42,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742290119] [2023-12-02 16:36:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742290119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135082512] [2023-12-02 16:36:42,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:36:42,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:36:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:36:42,573 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:36:42,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:36:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:42,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 16:36:42,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:42,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:36:46,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135082512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:36:46,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [619832511] [2023-12-02 16:36:46,906 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:36:46,906 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:36:46,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:36:46,907 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:36:46,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:46,958 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:48,769 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '132312#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:36:48,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:36:48,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:36:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2023-12-02 16:36:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221883205] [2023-12-02 16:36:48,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:36:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-02 16:36:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-02 16:36:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8229, Invalid=9861, Unknown=0, NotChecked=0, Total=18090 [2023-12-02 16:36:48,776 INFO L87 Difference]: Start difference. First operand 9065 states and 10558 transitions. Second operand has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:51,460 INFO L93 Difference]: Finished difference Result 25118 states and 31994 transitions. [2023-12-02 16:36:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-02 16:36:51,461 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 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 379 [2023-12-02 16:36:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:51,506 INFO L225 Difference]: With dead ends: 25118 [2023-12-02 16:36:51,507 INFO L226 Difference]: Without dead ends: 25117 [2023-12-02 16:36:51,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1014 SyntacticMatches, 51 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11631 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8229, Invalid=9861, Unknown=0, NotChecked=0, Total=18090 [2023-12-02 16:36:51,512 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 582 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:51,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 397 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:36:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25117 states. [2023-12-02 16:36:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25117 to 25117. [2023-12-02 16:36:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25117 states, 25115 states have (on average 1.1647222775233923) internal successors, (29252), 25116 states have internal predecessors, (29252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25117 states to 25117 states and 29252 transitions. [2023-12-02 16:36:52,787 INFO L78 Accepts]: Start accepts. Automaton has 25117 states and 29252 transitions. Word has length 379 [2023-12-02 16:36:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:52,788 INFO L495 AbstractCegarLoop]: Abstraction has 25117 states and 29252 transitions. [2023-12-02 16:36:52,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:36:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 25117 states and 29252 transitions. [2023-12-02 16:36:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-12-02 16:36:52,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:52,833 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 126, 126, 126, 1, 1] [2023-12-02 16:36:52,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 16:36:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 16:36:53,034 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:36:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1411573477, now seen corresponding path program 6 times [2023-12-02 16:36:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40354176] [2023-12-02 16:36:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47754 backedges. 0 proven. 47754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:04,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40354176] [2023-12-02 16:37:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40354176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847081680] [2023-12-02 16:37:04,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:37:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:37:04,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:37:04,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:37:04,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:37:04,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:37:04,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 16:37:04,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 47754 backedges. 30954 proven. 0 refuted. 0 times theorem prover too weak. 16800 trivial. 0 not checked. [2023-12-02 16:37:07,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:37:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847081680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:07,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:37:07,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [127] total 180 [2023-12-02 16:37:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257979552] [2023-12-02 16:37:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:07,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-02 16:37:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-02 16:37:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2023-12-02 16:37:07,448 INFO L87 Difference]: Start difference. First operand 25117 states and 29252 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:07,914 INFO L93 Difference]: Finished difference Result 25578 states and 29789 transitions. [2023-12-02 16:37:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-02 16:37:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 761 [2023-12-02 16:37:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:07,916 INFO L225 Difference]: With dead ends: 25578 [2023-12-02 16:37:07,916 INFO L226 Difference]: Without dead ends: 764 [2023-12-02 16:37:07,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2023-12-02 16:37:07,934 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 29 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:07,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 603 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:37:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2023-12-02 16:37:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2023-12-02 16:37:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.001310615989515) internal successors, (764), 763 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 764 transitions. [2023-12-02 16:37:07,957 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 764 transitions. Word has length 761 [2023-12-02 16:37:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:07,957 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 764 transitions. [2023-12-02 16:37:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 764 transitions. [2023-12-02 16:37:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-02 16:37:07,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:07,962 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 126, 76, 76, 76, 51, 51, 51, 1, 1] [2023-12-02 16:37:07,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 16:37:08,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 16:37:08,162 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)] === [2023-12-02 16:37:08,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash 860533573, now seen corresponding path program 8 times [2023-12-02 16:37:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715867480] [2023-12-02 16:37:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 0 proven. 40254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:37:19,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715867480] [2023-12-02 16:37:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715867480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575077509] [2023-12-02 16:37:19,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:37:19,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:19,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:37:19,017 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:37:19,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 16:37:19,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2023-12-02 16:37:19,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:37:19,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-02 16:37:19,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 15552 proven. 17252 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2023-12-02 16:37:19,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 15552 proven. 17252 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2023-12-02 16:37:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575077509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:37:28,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1522847565] [2023-12-02 16:37:28,043 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:37:28,043 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:37:28,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:37:28,044 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:37:28,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:37:28,103 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:37:29,965 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '228890#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:37:29,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:37:29,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:37:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 78, 78] total 205 [2023-12-02 16:37:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735154156] [2023-12-02 16:37:29,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:37:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2023-12-02 16:37:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2023-12-02 16:37:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21294, Invalid=23862, Unknown=0, NotChecked=0, Total=45156 [2023-12-02 16:37:29,978 INFO L87 Difference]: Start difference. First operand 764 states and 764 transitions. Second operand has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:35,460 INFO L93 Difference]: Finished difference Result 1233 states and 1310 transitions. [2023-12-02 16:37:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-02 16:37:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 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 763 [2023-12-02 16:37:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:35,464 INFO L225 Difference]: With dead ends: 1233 [2023-12-02 16:37:35,464 INFO L226 Difference]: Without dead ends: 1232 [2023-12-02 16:37:35,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2414 GetRequests, 2152 SyntacticMatches, 51 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20295 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=21294, Invalid=23862, Unknown=0, NotChecked=0, Total=45156 [2023-12-02 16:37:35,467 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:35,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 620 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:37:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-02 16:37:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2023-12-02 16:37:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 1.0008123476848092) internal successors, (1232), 1231 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1232 transitions. [2023-12-02 16:37:35,517 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1232 transitions. Word has length 763 [2023-12-02 16:37:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:35,518 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1232 transitions. [2023-12-02 16:37:35,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:37:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1232 transitions. [2023-12-02 16:37:35,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2023-12-02 16:37:35,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:35,532 INFO L195 NwaCegarLoop]: trace histogram [205, 205, 204, 154, 154, 154, 51, 51, 51, 1, 1] [2023-12-02 16:37:35,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 16:37:35,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:35,733 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 16:37:35,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1449021435, now seen corresponding path program 9 times [2023-12-02 16:37:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353073183] [2023-12-02 16:37:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 0 proven. 109752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:38:09,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:38:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353073183] [2023-12-02 16:38:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353073183] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:38:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790240208] [2023-12-02 16:38:09,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:38:09,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:38:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:38:09,638 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:38:09,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 16:38:09,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:38:09,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:38:09,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 105 conjunts are in the unsatisfiable core [2023-12-02 16:38:09,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 65993 proven. 12752 refuted. 0 times theorem prover too weak. 31007 trivial. 0 not checked. [2023-12-02 16:38:14,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:38:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 65993 proven. 12752 refuted. 0 times theorem prover too weak. 31007 trivial. 0 not checked. [2023-12-02 16:38:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790240208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:38:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1008932782] [2023-12-02 16:38:23,384 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 16:38:23,385 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:38:23,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:38:23,385 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:38:23,385 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:38:23,434 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:38:26,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '239412#(<= 2147483647 |ULTIMATE.start_main_~x~0#1|)' at error location [2023-12-02 16:38:26,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:38:26,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:38:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 54, 54] total 259 [2023-12-02 16:38:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084249114] [2023-12-02 16:38:26,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:38:26,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2023-12-02 16:38:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2023-12-02 16:38:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22985, Invalid=48037, Unknown=0, NotChecked=0, Total=71022 [2023-12-02 16:38:27,008 INFO L87 Difference]: Start difference. First operand 1232 states and 1232 transitions. Second operand has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:42,332 INFO L93 Difference]: Finished difference Result 1232 states and 1232 transitions. [2023-12-02 16:38:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-02 16:38:42,333 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 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 1231 [2023-12-02 16:38:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:42,334 INFO L225 Difference]: With dead ends: 1232 [2023-12-02 16:38:42,334 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:38:42,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4103 GetRequests, 3476 SyntacticMatches, 155 SemanticMatches, 472 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80145 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=71348, Invalid=152854, Unknown=0, NotChecked=0, Total=224202 [2023-12-02 16:38:42,348 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:42,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:38:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:38:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:38:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:38:42,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1231 [2023-12-02 16:38:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:42,349 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:38:42,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:38:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:38:42,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:38:42,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-12-02 16:38:42,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-12-02 16:38:42,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-12-02 16:38:42,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-12-02 16:38:42,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-12-02 16:38:42,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-12-02 16:38:42,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-02 16:38:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:38:42,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 16:38:44,736 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 16:38:44,736 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-12-02 16:38:44,737 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-12-02 16:38:44,738 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-12-02 16:38:44,738 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-02 16:38:44,738 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-12-02 16:38:44,740 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse2 (<= |ULTIMATE.start_main_~y~0#1| 50)) (.cse14 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse10 (<= |ULTIMATE.start_main_~y~0#1| 8)) (.cse11 (<= |ULTIMATE.start_main_~y~0#1| 36)) (.cse30 (<= |ULTIMATE.start_main_~y~0#1| 25)) (.cse18 (<= |ULTIMATE.start_main_~y~0#1| 13)) (.cse12 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 6)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 31)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 19)) (.cse39 (<= |ULTIMATE.start_main_~y~0#1| 4)) (.cse36 (<= |ULTIMATE.start_main_~y~0#1| 24)) (.cse9 (<= |ULTIMATE.start_main_~y~0#1| 3)) (.cse33 (<= |ULTIMATE.start_main_~y~0#1| 34)) (.cse26 (<= |ULTIMATE.start_main_~y~0#1| 45)) (.cse16 (<= |ULTIMATE.start_main_~y~0#1| 42)) (.cse46 (<= |ULTIMATE.start_main_~y~0#1| 17)) (.cse15 (<= |ULTIMATE.start_main_~y~0#1| 47)) (.cse44 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse20 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse6 (<= |ULTIMATE.start_main_~y~0#1| 40)) (.cse40 (<= |ULTIMATE.start_main_~y~0#1| 28)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 46)) (.cse24 (<= |ULTIMATE.start_main_~y~0#1| 16)) (.cse7 (<= |ULTIMATE.start_main_~y~0#1| 44)) (.cse37 (<= |ULTIMATE.start_main_~y~0#1| 22)) (.cse42 (<= |ULTIMATE.start_main_~y~0#1| 21)) (.cse27 (<= |ULTIMATE.start_main_~y~0#1| 27)) (.cse41 (<= |ULTIMATE.start_main_~y~0#1| 49)) (.cse47 (<= |ULTIMATE.start_main_~y~0#1| 33)) (.cse28 (<= |ULTIMATE.start_main_~y~0#1| 7)) (.cse48 (<= |ULTIMATE.start_main_~y~0#1| 43)) (.cse5 (<= |ULTIMATE.start_main_~y~0#1| 32)) (.cse35 (<= |ULTIMATE.start_main_~y~0#1| 14)) (.cse34 (<= |ULTIMATE.start_main_~y~0#1| 48)) (.cse19 (<= |ULTIMATE.start_main_~y~0#1| 30)) (.cse45 (<= |ULTIMATE.start_main_~y~0#1| 23)) (.cse22 (<= |ULTIMATE.start_main_~y~0#1| 9)) (.cse31 (<= |ULTIMATE.start_main_~y~0#1| 5)) (.cse50 (<= |ULTIMATE.start_main_~y~0#1| 35)) (.cse25 (<= |ULTIMATE.start_main_~y~0#1| 37)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 11)) (.cse17 (<= |ULTIMATE.start_main_~y~0#1| 12)) (.cse29 (<= |ULTIMATE.start_main_~y~0#1| 39)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 38)) (.cse21 (<= |ULTIMATE.start_main_~y~0#1| 29)) (.cse32 (<= |ULTIMATE.start_main_~y~0#1| 26)) (.cse43 (<= |ULTIMATE.start_main_~y~0#1| 18)) (.cse49 (<= |ULTIMATE.start_main_~y~0#1| 41)) (.cse38 (<= |ULTIMATE.start_main_~y~0#1| 15)) (.cse0 (<= 51 |ULTIMATE.start_main_~x~0#1|))) (or (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 83) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 52) .cse2) (and (= |ULTIMATE.start_main_~x~0#1| 50) .cse2) (and .cse3 (<= |ULTIMATE.start_main_~x~0#1| 96) .cse0) (and (= 31 |ULTIMATE.start_main_~x~0#1|) .cse4) (and (<= |ULTIMATE.start_main_~x~0#1| 70) .cse5 .cse0) (and .cse6 (= 40 |ULTIMATE.start_main_~x~0#1|)) (and .cse7 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 58)) (and (= |ULTIMATE.start_main_~x~0#1| 11) .cse8) (and .cse0 .cse9 (<= |ULTIMATE.start_main_~x~0#1| 99)) (and (= |ULTIMATE.start_main_~x~0#1| 8) .cse10) (and (= |ULTIMATE.start_main_~x~0#1| 36) .cse11) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse12) (and .cse13 (= 46 |ULTIMATE.start_main_~x~0#1|)) (and .cse14 (<= |ULTIMATE.start_main_~x~0#1| 100) .cse0) (and .cse15 (= 47 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 60) .cse16 .cse0) (and .cse17 (= |ULTIMATE.start_main_~x~0#1| 12)) (and (= |ULTIMATE.start_main_~x~0#1| 13) .cse18) (and (<= |ULTIMATE.start_main_~y~0#1| 0) .cse0 (<= |ULTIMATE.start_main_~x~0#1| 102)) (and (<= |ULTIMATE.start_main_~x~0#1| 72) .cse19 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 92) .cse20 .cse0) (and (= 2 |ULTIMATE.start_main_~x~0#1|) .cse14) (and .cse21 (= 29 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 93)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 94) .cse10) (and (= |ULTIMATE.start_main_~x~0#1| 38) .cse23) (and (= 16 |ULTIMATE.start_main_~x~0#1|) .cse24) (and .cse25 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 65)) (and .cse26 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 57)) (and (<= |ULTIMATE.start_main_~x~0#1| 66) .cse0 .cse11) (and (<= |ULTIMATE.start_main_~x~0#1| 75) .cse27 .cse0) (and .cse28 (= 7 |ULTIMATE.start_main_~x~0#1|)) (and .cse29 (= |ULTIMATE.start_main_~x~0#1| 39)) (and .cse30 (= |ULTIMATE.start_main_~x~0#1| 25)) (and (= 5 |ULTIMATE.start_main_~x~0#1|) .cse31) (and .cse32 (<= |ULTIMATE.start_main_~x~0#1| 76) .cse0) (and (= |ULTIMATE.start_main_~x~0#1| 34) .cse33) (and .cse34 (= |ULTIMATE.start_main_~x~0#1| 48)) (and .cse35 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 88)) (and (<= |ULTIMATE.start_main_~x~0#1| 77) .cse30 .cse0) (and .cse36 (<= |ULTIMATE.start_main_~x~0#1| 78) .cse0) (and (= 22 |ULTIMATE.start_main_~x~0#1|) .cse37) (and .cse38 (= |ULTIMATE.start_main_~x~0#1| 15)) (and .cse39 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 98)) (and (<= |ULTIMATE.start_main_~x~0#1| 89) .cse0 .cse18) (and .cse12 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 101)) (and .cse3 (= 6 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 71) .cse0 .cse4) (and .cse40 (= |ULTIMATE.start_main_~x~0#1| 28)) (and (<= |ULTIMATE.start_main_~x~0#1| 53) .cse41 .cse0) (and (= 19 |ULTIMATE.start_main_~x~0#1|) .cse1) (and .cse39 (= |ULTIMATE.start_main_~x~0#1| 4)) (and .cse36 (= |ULTIMATE.start_main_~x~0#1| 24)) (and .cse42 (= 21 |ULTIMATE.start_main_~x~0#1|)) (and (= 3 |ULTIMATE.start_main_~x~0#1|) .cse9) (and (<= |ULTIMATE.start_main_~x~0#1| 84) .cse43 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 82) .cse44 .cse0) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 79) .cse45) (and (<= |ULTIMATE.start_main_~x~0#1| 68) .cse0 .cse33) (and .cse26 (= |ULTIMATE.start_main_~x~0#1| 45)) (and .cse16 (= 42 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 85) .cse46 .cse0) (and .cse46 (= |ULTIMATE.start_main_~x~0#1| 17)) (and .cse15 (<= |ULTIMATE.start_main_~x~0#1| 55) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse47 (= |ULTIMATE.start_main_~x~0#1| 33)) (and .cse44 (= |ULTIMATE.start_main_~x~0#1| 20)) (and .cse20 (= |ULTIMATE.start_main_~x~0#1| 10)) (and .cse6 (<= |ULTIMATE.start_main_~x~0#1| 62) .cse0) (and .cse40 (<= |ULTIMATE.start_main_~x~0#1| 74) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 56) .cse13 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 86) .cse0 .cse24) (and .cse7 (= 44 |ULTIMATE.start_main_~x~0#1|)) (and .cse0 .cse37 (<= |ULTIMATE.start_main_~x~0#1| 80)) (and .cse42 (<= |ULTIMATE.start_main_~x~0#1| 81) .cse0) (and .cse27 (= |ULTIMATE.start_main_~x~0#1| 27)) (and (= 49 |ULTIMATE.start_main_~x~0#1|) .cse41) (and .cse47 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 69)) (and .cse28 (<= |ULTIMATE.start_main_~x~0#1| 95) .cse0) (and .cse48 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 59)) (and .cse48 (= |ULTIMATE.start_main_~x~0#1| 43)) (and (= 41 |ULTIMATE.start_main_~x~0#1|) .cse49) (and .cse50 (= 35 |ULTIMATE.start_main_~x~0#1|)) (and (= 32 |ULTIMATE.start_main_~x~0#1|) .cse5) (and .cse35 (= 14 |ULTIMATE.start_main_~x~0#1|)) (and .cse34 (<= |ULTIMATE.start_main_~x~0#1| 54) .cse0) (and .cse19 (= 30 |ULTIMATE.start_main_~x~0#1|)) (and (= 23 |ULTIMATE.start_main_~x~0#1|) .cse45) (and (= 9 |ULTIMATE.start_main_~x~0#1|) .cse22) (and .cse31 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 97)) (and (<= |ULTIMATE.start_main_~x~0#1| 67) .cse50 .cse0) (and (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (<= |ULTIMATE.start_main_~x~0#1| 103) .cse0) (and .cse25 (= |ULTIMATE.start_main_~x~0#1| 37)) (and (<= |ULTIMATE.start_main_~x~0#1| 91) .cse8 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 90) .cse17 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 63) .cse29 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 64) .cse23 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 73) .cse21 .cse0) (and .cse32 (= |ULTIMATE.start_main_~x~0#1| 26)) (and .cse43 (= |ULTIMATE.start_main_~x~0#1| 18)) (and (= 51 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and (<= |ULTIMATE.start_main_~x~0#1| 61) .cse0 .cse49) (and .cse38 (<= |ULTIMATE.start_main_~x~0#1| 87) .cse0))) [2023-12-02 16:38:44,742 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2023-12-02 16:38:44,744 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:38:44,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:38:44 BoogieIcfgContainer [2023-12-02 16:38:44,765 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:38:44,766 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:38:44,766 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:38:44,766 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:38:44,766 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:01" (3/4) ... [2023-12-02 16:38:44,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 16:38:44,773 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-12-02 16:38:44,773 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 16:38:44,773 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 16:38:44,855 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:38:44,855 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 16:38:44,855 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:38:44,856 INFO L158 Benchmark]: Toolchain (without parser) took 163842.19ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 132.5MB in the beginning and 779.0MB in the end (delta: -646.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-12-02 16:38:44,857 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:38:44,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.05ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 140.4MB in the end (delta: -7.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-12-02 16:38:44,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.31ms. Allocated memory is still 167.8MB. Free memory was 140.4MB in the beginning and 139.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:38:44,858 INFO L158 Benchmark]: Boogie Preprocessor took 15.20ms. Allocated memory is still 167.8MB. Free memory was 139.2MB in the beginning and 138.4MB in the end (delta: 731.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:38:44,858 INFO L158 Benchmark]: RCFGBuilder took 232.41ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 128.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:38:44,859 INFO L158 Benchmark]: TraceAbstraction took 163239.06ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 127.4MB in the beginning and 783.2MB in the end (delta: -655.8MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-12-02 16:38:44,859 INFO L158 Benchmark]: Witness Printer took 89.81ms. Allocated memory is still 1.8GB. Free memory was 783.2MB in the beginning and 779.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:38:44,861 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.05ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 140.4MB in the end (delta: -7.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.31ms. Allocated memory is still 167.8MB. Free memory was 140.4MB in the beginning and 139.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.20ms. Allocated memory is still 167.8MB. Free memory was 139.2MB in the beginning and 138.4MB in the end (delta: 731.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.41ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 128.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 163239.06ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 127.4MB in the beginning and 783.2MB in the end (delta: -655.8MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 89.81ms. Allocated memory is still 1.8GB. Free memory was 783.2MB in the beginning and 779.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 163.2s, OverallIterations: 20, TraceHistogramMax: 205, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 30.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2128 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2128 mSDsluCounter, 3965 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3538 mSDsCounter, 641 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7086 IncrementalHoareTripleChecker+Invalid, 7727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 641 mSolverCounterUnsat, 427 mSDtfsCounter, 7086 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14000 GetRequests, 11928 SyntacticMatches, 556 SemanticMatches, 1516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146391 ImplicationChecksByTransitivity, 85.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25117occurred in iteration=17, InterpolantAutomatonStates: 1072, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 62762 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 887 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11479 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 105.9s InterpolantComputationTime, 9719 NumberOfCodeBlocks, 9467 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 13757 ConstructedInterpolants, 0 QuantifiedInterpolants, 34637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7696 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 51 InterpolantComputations, 5 PerfectInterpolantSequences, 313194/679968 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((51 <= x) && (x <= 83)) && (y <= 19)) || (((51 <= x) && (x <= 52)) && (y <= 50))) || ((x == 50) && (y <= 50))) || (((y <= 6) && (x <= 96)) && (51 <= x))) || ((31 == x) && (y <= 31))) || (((x <= 70) && (y <= 32)) && (51 <= x))) || ((y <= 40) && (40 == x))) || (((y <= 44) && (51 <= x)) && (x <= 58))) || ((x == 11) && (y <= 11))) || (((51 <= x) && (y <= 3)) && (x <= 99))) || ((x == 8) && (y <= 8))) || ((x == 36) && (y <= 36))) || ((x == 1) && (y <= 1))) || ((y <= 46) && (46 == x))) || (((y <= 2) && (x <= 100)) && (51 <= x))) || ((y <= 47) && (47 == x))) || (((x <= 60) && (y <= 42)) && (51 <= x))) || ((y <= 12) && (x == 12))) || ((x == 13) && (y <= 13))) || (((y <= 0) && (51 <= x)) && (x <= 102))) || (((x <= 72) && (y <= 30)) && (51 <= x))) || (((x <= 92) && (y <= 10)) && (51 <= x))) || ((2 == x) && (y <= 2))) || ((y <= 29) && (29 == x))) || (((y <= 9) && (51 <= x)) && (x <= 93))) || (((51 <= x) && (x <= 94)) && (y <= 8))) || ((x == 38) && (y <= 38))) || ((16 == x) && (y <= 16))) || (((y <= 37) && (51 <= x)) && (x <= 65))) || (((y <= 45) && (51 <= x)) && (x <= 57))) || (((x <= 66) && (51 <= x)) && (y <= 36))) || (((x <= 75) && (y <= 27)) && (51 <= x))) || ((y <= 7) && (7 == x))) || ((y <= 39) && (x == 39))) || ((y <= 25) && (x == 25))) || ((5 == x) && (y <= 5))) || (((y <= 26) && (x <= 76)) && (51 <= x))) || ((x == 34) && (y <= 34))) || ((y <= 48) && (x == 48))) || (((y <= 14) && (51 <= x)) && (x <= 88))) || (((x <= 77) && (y <= 25)) && (51 <= x))) || (((y <= 24) && (x <= 78)) && (51 <= x))) || ((22 == x) && (y <= 22))) || ((y <= 15) && (x == 15))) || (((y <= 4) && (51 <= x)) && (x <= 98))) || (((x <= 89) && (51 <= x)) && (y <= 13))) || (((y <= 1) && (51 <= x)) && (x <= 101))) || ((y <= 6) && (6 == x))) || (((x <= 71) && (51 <= x)) && (y <= 31))) || ((y <= 28) && (x == 28))) || (((x <= 53) && (y <= 49)) && (51 <= x))) || ((19 == x) && (y <= 19))) || ((y <= 4) && (x == 4))) || ((y <= 24) && (x == 24))) || ((y <= 21) && (21 == x))) || ((3 == x) && (y <= 3))) || (((x <= 84) && (y <= 18)) && (51 <= x))) || (((x <= 82) && (y <= 20)) && (51 <= x))) || (((51 <= x) && (x <= 79)) && (y <= 23))) || (((x <= 68) && (51 <= x)) && (y <= 34))) || ((y <= 45) && (x == 45))) || ((y <= 42) && (42 == x))) || (((x <= 85) && (y <= 17)) && (51 <= x))) || ((y <= 17) && (x == 17))) || (((y <= 47) && (x <= 55)) && (51 <= x))) || ((y == 0) && (x == 0))) || ((y <= 33) && (x == 33))) || ((y <= 20) && (x == 20))) || ((y <= 10) && (x == 10))) || (((y <= 40) && (x <= 62)) && (51 <= x))) || (((y <= 28) && (x <= 74)) && (51 <= x))) || (((x <= 56) && (y <= 46)) && (51 <= x))) || (((x <= 86) && (51 <= x)) && (y <= 16))) || ((y <= 44) && (44 == x))) || (((51 <= x) && (y <= 22)) && (x <= 80))) || (((y <= 21) && (x <= 81)) && (51 <= x))) || ((y <= 27) && (x == 27))) || ((49 == x) && (y <= 49))) || (((y <= 33) && (51 <= x)) && (x <= 69))) || (((y <= 7) && (x <= 95)) && (51 <= x))) || (((y <= 43) && (51 <= x)) && (x <= 59))) || ((y <= 43) && (x == 43))) || ((41 == x) && (y <= 41))) || ((y <= 35) && (35 == x))) || ((32 == x) && (y <= 32))) || ((y <= 14) && (14 == x))) || (((y <= 48) && (x <= 54)) && (51 <= x))) || ((y <= 30) && (30 == x))) || ((23 == x) && (y <= 23))) || ((9 == x) && (y <= 9))) || (((y <= 5) && (51 <= x)) && (x <= 97))) || (((x <= 67) && (y <= 35)) && (51 <= x))) || ((((y + 1) <= 0) && (x <= 103)) && (51 <= x))) || ((y <= 37) && (x == 37))) || (((x <= 91) && (y <= 11)) && (51 <= x))) || (((x <= 90) && (y <= 12)) && (51 <= x))) || (((x <= 63) && (y <= 39)) && (51 <= x))) || (((x <= 64) && (y <= 38)) && (51 <= x))) || (((x <= 73) && (y <= 29)) && (51 <= x))) || ((y <= 26) && (x == 26))) || ((y <= 18) && (x == 18))) || ((51 == x) && (y <= 51))) || (((x <= 61) && (51 <= x)) && (y <= 41))) || (((y <= 15) && (x <= 87)) && (51 <= x))) RESULT: Ultimate proved your program to be correct! [2023-12-02 16:38:44,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8efed14-44b5-4a5e-82b9-c20d7ecd84fc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE