./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje --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 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:49:17,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:49:17,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-09 05:49:17,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:49:17,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:49:17,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:49:17,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:49:17,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:49:17,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:49:17,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:49:17,933 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:49:17,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:49:17,934 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:49:17,934 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:49:17,936 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:49:17,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:49:17,939 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:49:17,940 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:49:17,940 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:49:17,940 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:49:17,941 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:49:17,941 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:49:17,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:49:17,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:49:17,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:49:17,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:49:17,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:49:17,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:49:17,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:49:17,947 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:49:17,948 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:49:17,948 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:49:17,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:49:17,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:49:17,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:49:17,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:49:17,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:49:17,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:49:17,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:49:17,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:49:17,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:49:17,954 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:49:17,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:49:17,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:49:17,955 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:49:17,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:49:17,955 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_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2024-11-09 05:49:18,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:49:18,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:49:18,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:49:18,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:49:18,272 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:49:18,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c Unable to find full path for "g++" [2024-11-09 05:49:20,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:49:20,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:49:20,407 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2024-11-09 05:49:20,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/data/c5bd67f19/820280cf72c4497e874bc9967ca0e283/FLAG12440b7a2 [2024-11-09 05:49:20,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/data/c5bd67f19/820280cf72c4497e874bc9967ca0e283 [2024-11-09 05:49:20,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:49:20,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:49:20,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:49:20,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:49:20,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:49:20,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6f89c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20, skipping insertion in model container [2024-11-09 05:49:20,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:49:20,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:49:20,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:49:20,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:49:20,744 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:49:20,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20 WrapperNode [2024-11-09 05:49:20,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:49:20,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:49:20,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:49:20,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:49:20,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,785 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-09 05:49:20,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:49:20,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:49:20,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:49:20,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:49:20,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:49:20,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:49:20,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:49:20,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:49:20,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (1/1) ... [2024-11-09 05:49:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:49:20,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:20,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:49:20,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:49:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:49:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:49:21,006 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:49:21,008 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:49:21,211 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-09 05:49:21,215 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:49:21,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:49:21,271 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:49:21,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:49:21 BoogieIcfgContainer [2024-11-09 05:49:21,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:49:21,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:49:21,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:49:21,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:49:21,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:49:20" (1/3) ... [2024-11-09 05:49:21,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f6de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:21, skipping insertion in model container [2024-11-09 05:49:21,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:20" (2/3) ... [2024-11-09 05:49:21,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f6de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:21, skipping insertion in model container [2024-11-09 05:49:21,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:49:21" (3/3) ... [2024-11-09 05:49:21,282 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2024-11-09 05:49:21,302 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:49:21,303 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-09 05:49:21,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:49:21,380 INFO L333 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, 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;@59f60f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:49:21,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 05:49:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 05:49:21,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:21,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 05:49:21,399 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:21,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2925637, now seen corresponding path program 1 times [2024-11-09 05:49:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450181950] [2024-11-09 05:49:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:21,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:21,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450181950] [2024-11-09 05:49:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450181950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:21,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:21,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485766977] [2024-11-09 05:49:21,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:21,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:21,664 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-09 05:49:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:21,706 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-11-09 05:49:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:21,709 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 [2024-11-09 05:49:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:21,719 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:49:21,719 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:49:21,723 INFO L431 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 [2024-11-09 05:49:21,726 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:21,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:49:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 05:49:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-09 05:49:21,763 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 4 [2024-11-09 05:49:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:21,764 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-09 05:49:21,764 INFO L472 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) [2024-11-09 05:49:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-09 05:49:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:49:21,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:21,765 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:49:21,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:49:21,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:21,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:21,767 INFO L85 PathProgramCache]: Analyzing trace with hash 90694792, now seen corresponding path program 1 times [2024-11-09 05:49:21,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:21,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765011783] [2024-11-09 05:49:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:21,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765011783] [2024-11-09 05:49:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765011783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:21,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031212254] [2024-11-09 05:49:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:21,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:21,809 INFO L87 Difference]: Start difference. First operand 27 states and 32 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) [2024-11-09 05:49:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:21,834 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-09 05:49:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:21,835 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 [2024-11-09 05:49:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:21,836 INFO L225 Difference]: With dead ends: 32 [2024-11-09 05:49:21,836 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 05:49:21,837 INFO L431 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 [2024-11-09 05:49:21,838 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:21,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 05:49:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 05:49:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 05:49:21,848 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 5 [2024-11-09 05:49:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:21,849 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 05:49:21,849 INFO L472 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) [2024-11-09 05:49:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 05:49:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:49:21,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:21,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:21,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:49:21,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:21,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash 354167050, now seen corresponding path program 1 times [2024-11-09 05:49:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:21,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959492837] [2024-11-09 05:49:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:21,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959492837] [2024-11-09 05:49:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959492837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:21,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:21,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746438747] [2024-11-09 05:49:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:21,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:21,912 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:21,948 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-09 05:49:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:21,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 05:49:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:21,950 INFO L225 Difference]: With dead ends: 55 [2024-11-09 05:49:21,950 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 05:49:21,950 INFO L431 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 [2024-11-09 05:49:21,952 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:21,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 48 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 05:49:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-11-09 05:49:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-11-09 05:49:21,960 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 8 [2024-11-09 05:49:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:21,960 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-11-09 05:49:21,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-11-09 05:49:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:49:21,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:21,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:21,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:49:21,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:21,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1905723283, now seen corresponding path program 1 times [2024-11-09 05:49:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:21,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366433024] [2024-11-09 05:49:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:22,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366433024] [2024-11-09 05:49:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366433024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:22,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408496535] [2024-11-09 05:49:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:22,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:22,016 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:22,063 INFO L93 Difference]: Finished difference Result 87 states and 121 transitions. [2024-11-09 05:49:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 05:49:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:22,065 INFO L225 Difference]: With dead ends: 87 [2024-11-09 05:49:22,065 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 05:49:22,066 INFO L431 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 [2024-11-09 05:49:22,067 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:22,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 48 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 05:49:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2024-11-09 05:49:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 79 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) [2024-11-09 05:49:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 118 transitions. [2024-11-09 05:49:22,082 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 118 transitions. Word has length 9 [2024-11-09 05:49:22,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:22,083 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 118 transitions. [2024-11-09 05:49:22,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 118 transitions. [2024-11-09 05:49:22,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:49:22,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:22,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:22,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:49:22,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:22,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1052312115, now seen corresponding path program 1 times [2024-11-09 05:49:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:22,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791148736] [2024-11-09 05:49:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:22,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791148736] [2024-11-09 05:49:22,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791148736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:22,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:22,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790934225] [2024-11-09 05:49:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:22,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:22,152 INFO L87 Difference]: Start difference. First operand 80 states and 118 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:22,194 INFO L93 Difference]: Finished difference Result 153 states and 231 transitions. [2024-11-09 05:49:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 05:49:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:22,197 INFO L225 Difference]: With dead ends: 153 [2024-11-09 05:49:22,197 INFO L226 Difference]: Without dead ends: 151 [2024-11-09 05:49:22,197 INFO L431 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 [2024-11-09 05:49:22,202 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:22,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-09 05:49:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 142. [2024-11-09 05:49:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 133 states have (on average 1.6165413533834587) internal successors, (215), 141 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 215 transitions. [2024-11-09 05:49:22,224 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 215 transitions. Word has length 10 [2024-11-09 05:49:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:22,225 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 215 transitions. [2024-11-09 05:49:22,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 215 transitions. [2024-11-09 05:49:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:49:22,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:22,226 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-09 05:49:22,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:49:22,226 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:22,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1087678966, now seen corresponding path program 1 times [2024-11-09 05:49:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731750487] [2024-11-09 05:49:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:22,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731750487] [2024-11-09 05:49:22,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731750487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245176276] [2024-11-09 05:49:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:22,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:22,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:22,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:49:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:22,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:22,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:22,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245176276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [527669138] [2024-11-09 05:49:22,493 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:49:22,493 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:22,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:22,501 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:22,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:22,975 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:23,258 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '834#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:23,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:23,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332243499] [2024-11-09 05:49:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:23,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:23,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:49:23,263 INFO L87 Difference]: Start difference. First operand 142 states and 215 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:23,338 INFO L93 Difference]: Finished difference Result 385 states and 561 transitions. [2024-11-09 05:49:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:49:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 05:49:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:23,341 INFO L225 Difference]: With dead ends: 385 [2024-11-09 05:49:23,341 INFO L226 Difference]: Without dead ends: 384 [2024-11-09 05:49:23,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:49:23,343 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 133 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:23,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 131 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-09 05:49:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 366. [2024-11-09 05:49:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 357 states have (on average 1.5182072829131652) internal successors, (542), 365 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 542 transitions. [2024-11-09 05:49:23,379 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 542 transitions. Word has length 10 [2024-11-09 05:49:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:23,379 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 542 transitions. [2024-11-09 05:49:23,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 542 transitions. [2024-11-09 05:49:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:49:23,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:23,384 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:23,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:23,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:49:23,585 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:23,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1738062730, now seen corresponding path program 1 times [2024-11-09 05:49:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615844302] [2024-11-09 05:49:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:23,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615844302] [2024-11-09 05:49:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615844302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:23,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:49:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291220751] [2024-11-09 05:49:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:23,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:49:23,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:23,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:49:23,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:49:23,658 INFO L87 Difference]: Start difference. First operand 366 states and 542 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:23,704 INFO L93 Difference]: Finished difference Result 612 states and 903 transitions. [2024-11-09 05:49:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:49:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2024-11-09 05:49:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:23,707 INFO L225 Difference]: With dead ends: 612 [2024-11-09 05:49:23,707 INFO L226 Difference]: Without dead ends: 610 [2024-11-09 05:49:23,708 INFO L431 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 [2024-11-09 05:49:23,711 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:23,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-09 05:49:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 605. [2024-11-09 05:49:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 596 states have (on average 1.4614093959731544) internal successors, (871), 604 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 871 transitions. [2024-11-09 05:49:23,772 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 871 transitions. Word has length 11 [2024-11-09 05:49:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:23,772 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 871 transitions. [2024-11-09 05:49:23,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 871 transitions. [2024-11-09 05:49:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:49:23,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:23,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 05:49:23,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:49:23,775 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:23,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1938760825, now seen corresponding path program 1 times [2024-11-09 05:49:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596698867] [2024-11-09 05:49:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:23,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596698867] [2024-11-09 05:49:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596698867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349803737] [2024-11-09 05:49:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:23,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:23,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:23,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:23,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:49:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:23,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:23,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:23,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349803737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570608200] [2024-11-09 05:49:23,994 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 05:49:23,994 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:23,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:23,999 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:23,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:24,179 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:24,419 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3064#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-09 05:49:24,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:24,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829263927] [2024-11-09 05:49:24,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:24,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:49:24,421 INFO L87 Difference]: Start difference. First operand 605 states and 871 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-09 05:49:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:24,515 INFO L93 Difference]: Finished difference Result 1143 states and 1696 transitions. [2024-11-09 05:49:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:49:24,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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 [2024-11-09 05:49:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:24,523 INFO L225 Difference]: With dead ends: 1143 [2024-11-09 05:49:24,523 INFO L226 Difference]: Without dead ends: 1141 [2024-11-09 05:49:24,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:49:24,528 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:24,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 117 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-09 05:49:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 993. [2024-11-09 05:49:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 984 states have (on average 1.4796747967479675) internal successors, (1456), 992 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1456 transitions. [2024-11-09 05:49:24,579 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1456 transitions. Word has length 17 [2024-11-09 05:49:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:24,579 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1456 transitions. [2024-11-09 05:49:24,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-09 05:49:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1456 transitions. [2024-11-09 05:49:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:49:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:24,580 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:24,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:24,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:49:24,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:24,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -43586274, now seen corresponding path program 1 times [2024-11-09 05:49:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:24,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947047318] [2024-11-09 05:49:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:24,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947047318] [2024-11-09 05:49:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947047318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676264262] [2024-11-09 05:49:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:24,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:24,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:24,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:24,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:49:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:24,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:24,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:24,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676264262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [6636361] [2024-11-09 05:49:24,965 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:49:24,966 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:24,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:24,966 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:24,966 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:25,112 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:25,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5472#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-09 05:49:25,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:25,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:25,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144934872] [2024-11-09 05:49:25,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:25,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:49:25,365 INFO L87 Difference]: Start difference. First operand 993 states and 1456 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-09 05:49:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:25,454 INFO L93 Difference]: Finished difference Result 1695 states and 2556 transitions. [2024-11-09 05:49:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:49:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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 [2024-11-09 05:49:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:25,463 INFO L225 Difference]: With dead ends: 1695 [2024-11-09 05:49:25,463 INFO L226 Difference]: Without dead ends: 1693 [2024-11-09 05:49:25,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:49:25,467 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 104 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:25,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 92 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-11-09 05:49:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1167. [2024-11-09 05:49:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1159 states have (on average 1.4667817083692838) internal successors, (1700), 1166 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1700 transitions. [2024-11-09 05:49:25,523 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1700 transitions. Word has length 17 [2024-11-09 05:49:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:25,523 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1700 transitions. [2024-11-09 05:49:25,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-09 05:49:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1700 transitions. [2024-11-09 05:49:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:49:25,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:25,528 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 05:49:25,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:49:25,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:25,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:25,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 306983499, now seen corresponding path program 1 times [2024-11-09 05:49:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:25,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968678412] [2024-11-09 05:49:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:25,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:25,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968678412] [2024-11-09 05:49:25,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968678412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673842181] [2024-11-09 05:49:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:25,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:25,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:25,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:49:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:25,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:25,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:25,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673842181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554463467] [2024-11-09 05:49:25,970 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:49:25,970 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:25,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:25,970 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:25,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:26,078 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:26,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8685#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:26,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:26,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702491611] [2024-11-09 05:49:26,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:26,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:26,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:49:26,312 INFO L87 Difference]: Start difference. First operand 1167 states and 1700 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:26,395 INFO L93 Difference]: Finished difference Result 2640 states and 4013 transitions. [2024-11-09 05:49:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:49:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 05:49:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:26,405 INFO L225 Difference]: With dead ends: 2640 [2024-11-09 05:49:26,405 INFO L226 Difference]: Without dead ends: 2638 [2024-11-09 05:49:26,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:49:26,408 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 120 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:26,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2024-11-09 05:49:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2302. [2024-11-09 05:49:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2294 states have (on average 1.4786399302528335) internal successors, (3392), 2301 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3392 transitions. [2024-11-09 05:49:26,482 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3392 transitions. Word has length 21 [2024-11-09 05:49:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:26,483 INFO L471 AbstractCegarLoop]: Abstraction has 2302 states and 3392 transitions. [2024-11-09 05:49:26,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3392 transitions. [2024-11-09 05:49:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:49:26,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:26,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:26,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:26,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:49:26,689 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:26,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1306092994, now seen corresponding path program 1 times [2024-11-09 05:49:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021861156] [2024-11-09 05:49:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:26,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021861156] [2024-11-09 05:49:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021861156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834148263] [2024-11-09 05:49:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:26,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:49:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:26,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:26,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:26,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834148263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416307376] [2024-11-09 05:49:26,871 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:49:26,871 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:26,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:26,872 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:26,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:26,990 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:27,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14129#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:27,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:27,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113020106] [2024-11-09 05:49:27,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:27,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:27,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:49:27,317 INFO L87 Difference]: Start difference. First operand 2302 states and 3392 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:27,420 INFO L93 Difference]: Finished difference Result 4336 states and 6583 transitions. [2024-11-09 05:49:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:49:27,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 05:49:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:27,436 INFO L225 Difference]: With dead ends: 4336 [2024-11-09 05:49:27,436 INFO L226 Difference]: Without dead ends: 4334 [2024-11-09 05:49:27,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:49:27,440 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 98 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:27,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 88 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2024-11-09 05:49:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 2836. [2024-11-09 05:49:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2829 states have (on average 1.4570519618239661) internal successors, (4122), 2835 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4122 transitions. [2024-11-09 05:49:27,530 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4122 transitions. Word has length 21 [2024-11-09 05:49:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:27,531 INFO L471 AbstractCegarLoop]: Abstraction has 2836 states and 4122 transitions. [2024-11-09 05:49:27,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4122 transitions. [2024-11-09 05:49:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:49:27,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:27,532 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2024-11-09 05:49:27,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:49:27,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:49:27,733 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:27,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 923622920, now seen corresponding path program 2 times [2024-11-09 05:49:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:27,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026535202] [2024-11-09 05:49:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:49:27,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026535202] [2024-11-09 05:49:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026535202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573366128] [2024-11-09 05:49:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:49:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:27,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:27,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:49:27,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 05:49:27,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:49:27,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:27,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:49:27,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:49:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573366128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542763334] [2024-11-09 05:49:27,920 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:49:27,921 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:27,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:27,921 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:27,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:28,044 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:28,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21989#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:28,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:28,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-09 05:49:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505795520] [2024-11-09 05:49:28,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:28,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:49:28,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:49:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:49:28,241 INFO L87 Difference]: Start difference. First operand 2836 states and 4122 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:28,309 INFO L93 Difference]: Finished difference Result 2836 states and 4122 transitions. [2024-11-09 05:49:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:49:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 25 [2024-11-09 05:49:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:28,318 INFO L225 Difference]: With dead ends: 2836 [2024-11-09 05:49:28,319 INFO L226 Difference]: Without dead ends: 2835 [2024-11-09 05:49:28,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:49:28,321 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:28,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2024-11-09 05:49:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2438. [2024-11-09 05:49:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2432 states have (on average 1.4222861842105263) internal successors, (3459), 2437 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3459 transitions. [2024-11-09 05:49:28,398 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3459 transitions. Word has length 25 [2024-11-09 05:49:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:28,399 INFO L471 AbstractCegarLoop]: Abstraction has 2438 states and 3459 transitions. [2024-11-09 05:49:28,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3459 transitions. [2024-11-09 05:49:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:49:28,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:28,400 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2024-11-09 05:49:28,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:49:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:28,601 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:28,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -33912493, now seen corresponding path program 1 times [2024-11-09 05:49:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751065408] [2024-11-09 05:49:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:28,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:28,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751065408] [2024-11-09 05:49:28,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751065408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:28,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691182645] [2024-11-09 05:49:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:28,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:28,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:28,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:28,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:49:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:28,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:49:28,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:28,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:28,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691182645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147518056] [2024-11-09 05:49:28,859 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:49:28,861 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:28,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:28,861 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:28,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:28,984 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:29,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27820#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-09 05:49:29,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:29,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:49:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647505804] [2024-11-09 05:49:29,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:29,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:49:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:49:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:49:29,200 INFO L87 Difference]: Start difference. First operand 2438 states and 3459 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:29,429 INFO L93 Difference]: Finished difference Result 7032 states and 10067 transitions. [2024-11-09 05:49:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:49:29,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 05:49:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:29,456 INFO L225 Difference]: With dead ends: 7032 [2024-11-09 05:49:29,457 INFO L226 Difference]: Without dead ends: 7031 [2024-11-09 05:49:29,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:49:29,461 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 152 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:29,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 148 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7031 states. [2024-11-09 05:49:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7031 to 5772. [2024-11-09 05:49:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5766 states have (on average 1.4186611168921262) internal successors, (8180), 5771 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 8180 transitions. [2024-11-09 05:49:29,689 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 8180 transitions. Word has length 27 [2024-11-09 05:49:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:29,689 INFO L471 AbstractCegarLoop]: Abstraction has 5772 states and 8180 transitions. [2024-11-09 05:49:29,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 8180 transitions. [2024-11-09 05:49:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:49:29,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:29,690 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2024-11-09 05:49:29,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:49:29,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:29,895 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:29,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1444390076, now seen corresponding path program 1 times [2024-11-09 05:49:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112993498] [2024-11-09 05:49:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:29,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112993498] [2024-11-09 05:49:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112993498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854847751] [2024-11-09 05:49:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:29,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:29,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:29,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:49:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:30,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:49:30,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:30,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854847751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [712579945] [2024-11-09 05:49:30,150 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:49:30,150 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:30,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:30,151 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:30,151 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:30,288 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:30,593 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41704#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:30,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:30,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:49:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160521027] [2024-11-09 05:49:30,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:30,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:49:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:30,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:49:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:49:30,595 INFO L87 Difference]: Start difference. First operand 5772 states and 8180 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:31,015 INFO L93 Difference]: Finished difference Result 16644 states and 23819 transitions. [2024-11-09 05:49:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:49:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 05:49:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:31,084 INFO L225 Difference]: With dead ends: 16644 [2024-11-09 05:49:31,084 INFO L226 Difference]: Without dead ends: 16643 [2024-11-09 05:49:31,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:49:31,094 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 132 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:31,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 148 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16643 states. [2024-11-09 05:49:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16643 to 13678. [2024-11-09 05:49:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13678 states, 13672 states have (on average 1.4149356348741955) internal successors, (19345), 13677 states have internal predecessors, (19345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 19345 transitions. [2024-11-09 05:49:31,748 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 19345 transitions. Word has length 33 [2024-11-09 05:49:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:31,748 INFO L471 AbstractCegarLoop]: Abstraction has 13678 states and 19345 transitions. [2024-11-09 05:49:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 19345 transitions. [2024-11-09 05:49:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 05:49:31,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:31,751 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1] [2024-11-09 05:49:31,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:49:31,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:31,952 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:31,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 787013789, now seen corresponding path program 2 times [2024-11-09 05:49:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423118689] [2024-11-09 05:49:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:32,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423118689] [2024-11-09 05:49:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423118689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527891008] [2024-11-09 05:49:32,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:49:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:32,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:32,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:49:32,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:49:32,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:49:32,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:49:32,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:32,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527891008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332134680] [2024-11-09 05:49:32,313 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 05:49:32,313 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:32,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:32,314 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:32,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:32,508 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:32,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74366#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-09 05:49:32,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:32,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:32,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 05:49:32,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972415968] [2024-11-09 05:49:32,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:32,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:49:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:49:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:49:32,787 INFO L87 Difference]: Start difference. First operand 13678 states and 19345 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-11-09 05:49:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:33,939 INFO L93 Difference]: Finished difference Result 46505 states and 67194 transitions. [2024-11-09 05:49:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:49:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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 [2024-11-09 05:49:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:34,068 INFO L225 Difference]: With dead ends: 46505 [2024-11-09 05:49:34,068 INFO L226 Difference]: Without dead ends: 46503 [2024-11-09 05:49:34,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:49:34,085 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 288 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:34,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 233 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46503 states. [2024-11-09 05:49:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46503 to 29328. [2024-11-09 05:49:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29328 states, 29322 states have (on average 1.3957779141941205) internal successors, (40927), 29327 states have internal predecessors, (40927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29328 states to 29328 states and 40927 transitions. [2024-11-09 05:49:35,361 INFO L78 Accepts]: Start accepts. Automaton has 29328 states and 40927 transitions. Word has length 41 [2024-11-09 05:49:35,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:35,362 INFO L471 AbstractCegarLoop]: Abstraction has 29328 states and 40927 transitions. [2024-11-09 05:49:35,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 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) [2024-11-09 05:49:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 29328 states and 40927 transitions. [2024-11-09 05:49:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 05:49:35,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:35,365 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1] [2024-11-09 05:49:35,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:49:35,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:35,566 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:35,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -883091894, now seen corresponding path program 2 times [2024-11-09 05:49:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485444171] [2024-11-09 05:49:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:35,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:35,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485444171] [2024-11-09 05:49:35,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485444171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:35,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487691593] [2024-11-09 05:49:35,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:49:35,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:35,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:35,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:49:35,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:49:35,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:49:35,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:49:35,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:35,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:36,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487691593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:36,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [918487247] [2024-11-09 05:49:36,090 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:49:36,091 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:36,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:36,091 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:36,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:36,210 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:36,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '155663#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:36,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:36,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 05:49:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187180897] [2024-11-09 05:49:36,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:36,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:49:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:49:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:49:36,472 INFO L87 Difference]: Start difference. First operand 29328 states and 40927 transitions. Second operand has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:38,336 INFO L93 Difference]: Finished difference Result 99605 states and 142082 transitions. [2024-11-09 05:49:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:49:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 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 51 [2024-11-09 05:49:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:38,566 INFO L225 Difference]: With dead ends: 99605 [2024-11-09 05:49:38,566 INFO L226 Difference]: Without dead ends: 99603 [2024-11-09 05:49:38,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:49:38,593 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 308 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:38,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 233 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99603 states. [2024-11-09 05:49:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99603 to 62862. [2024-11-09 05:49:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62862 states, 62856 states have (on average 1.3774500445462645) internal successors, (86581), 62861 states have internal predecessors, (86581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62862 states to 62862 states and 86581 transitions. [2024-11-09 05:49:41,452 INFO L78 Accepts]: Start accepts. Automaton has 62862 states and 86581 transitions. Word has length 51 [2024-11-09 05:49:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:41,452 INFO L471 AbstractCegarLoop]: Abstraction has 62862 states and 86581 transitions. [2024-11-09 05:49:41,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 62862 states and 86581 transitions. [2024-11-09 05:49:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 05:49:41,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:41,462 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2024-11-09 05:49:41,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:49:41,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:49:41,666 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:41,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1252219987, now seen corresponding path program 2 times [2024-11-09 05:49:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415650623] [2024-11-09 05:49:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:41,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:41,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415650623] [2024-11-09 05:49:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415650623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191589835] [2024-11-09 05:49:41,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:49:41,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:41,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:41,816 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:41,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:49:41,878 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 05:49:41,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:49:41,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:49:41,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:41,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:42,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191589835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1410618046] [2024-11-09 05:49:42,166 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:49:42,166 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:42,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:42,166 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:42,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:42,249 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:42,502 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '329317#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-09 05:49:42,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:42,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 05:49:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78945615] [2024-11-09 05:49:42,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:42,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:49:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:49:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:49:42,505 INFO L87 Difference]: Start difference. First operand 62862 states and 86581 transitions. Second operand has 16 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:47,609 INFO L93 Difference]: Finished difference Result 220877 states and 307038 transitions. [2024-11-09 05:49:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:49:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 05:49:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:48,201 INFO L225 Difference]: With dead ends: 220877 [2024-11-09 05:49:48,202 INFO L226 Difference]: Without dead ends: 220876 [2024-11-09 05:49:48,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:49:48,309 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 572 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:48,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 316 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:49:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220876 states. [2024-11-09 05:49:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220876 to 123072. [2024-11-09 05:49:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123072 states, 123066 states have (on average 1.3694359124372288) internal successors, (168531), 123071 states have internal predecessors, (168531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123072 states to 123072 states and 168531 transitions. [2024-11-09 05:49:53,376 INFO L78 Accepts]: Start accepts. Automaton has 123072 states and 168531 transitions. Word has length 63 [2024-11-09 05:49:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:53,377 INFO L471 AbstractCegarLoop]: Abstraction has 123072 states and 168531 transitions. [2024-11-09 05:49:53,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:49:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 123072 states and 168531 transitions. [2024-11-09 05:49:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:49:53,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:53,384 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2024-11-09 05:49:53,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:49:53,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 05:49:53,585 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-09 05:49:53,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash 123108988, now seen corresponding path program 2 times [2024-11-09 05:49:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:49:53,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510089092] [2024-11-09 05:49:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:49:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:53,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:49:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510089092] [2024-11-09 05:49:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510089092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990044802] [2024-11-09 05:49:53,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:49:53,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:53,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:53,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c70d11-2241-4cd7-8002-77cd5683d738/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:49:53,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 05:49:53,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:49:53,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:49:53,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:53,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:54,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990044802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702042221] [2024-11-09 05:49:54,315 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:49:54,315 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:49:54,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:49:54,315 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:49:54,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:49:54,406 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:49:54,678 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '696302#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:49:54,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:49:54,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 05:49:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767511881] [2024-11-09 05:49:54,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:54,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:49:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:49:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:49:54,681 INFO L87 Difference]: Start difference. First operand 123072 states and 168531 transitions. Second operand has 16 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:04,802 INFO L93 Difference]: Finished difference Result 432197 states and 597390 transitions. [2024-11-09 05:50:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:50:04,803 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 0 states have call successors, (0), 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 77 [2024-11-09 05:50:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:05,730 INFO L225 Difference]: With dead ends: 432197 [2024-11-09 05:50:05,730 INFO L226 Difference]: Without dead ends: 432196 [2024-11-09 05:50:05,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:50:05,798 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 470 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:05,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 316 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432196 states.