./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ --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 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:37,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:37,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:58:37,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:37,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:37,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:37,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:37,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:37,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:37,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:37,799 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:37,800 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:37,801 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:37,802 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:58:37,803 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:37,803 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:37,804 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:58:37,804 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:58:37,804 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:37,805 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:58:37,805 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:58:37,806 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:58:37,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:37,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:58:37,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:58:37,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:37,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:58:37,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:37,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:58:37,810 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:58:37,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:58:37,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:58:37,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:37,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:37,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:37,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:37,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:37,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:37,813 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:58:37,814 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:58:37,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:58:37,814 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:58:37,814 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:37,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:37,815 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_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 [2023-11-19 04:58:38,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:38,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:38,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:38,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:38,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:38,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2023-11-19 04:58:41,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:41,965 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:41,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2023-11-19 04:58:41,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/data/e165c50af/e62ef57f5ad84bee85bc15f43cee11e4/FLAGf0a113be1 [2023-11-19 04:58:41,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/data/e165c50af/e62ef57f5ad84bee85bc15f43cee11e4 [2023-11-19 04:58:42,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:42,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:42,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:42,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:42,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:42,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f46dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42, skipping insertion in model container [2023-11-19 04:58:42,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,058 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:42,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:42,304 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:58:42,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:42,345 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:58:42,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42 WrapperNode [2023-11-19 04:58:42,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:42,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:42,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:58:42,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:58:42,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,389 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-19 04:58:42,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:42,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:58:42,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:58:42,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:58:42,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:58:42,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:58:42,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:58:42,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:58:42,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (1/1) ... [2023-11-19 04:58:42,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:42,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:58:42,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:58:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:58:42,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:58:42,619 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:58:42,622 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:58:42,760 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:58:42,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:58:42,794 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:58:42,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:42 BoogieIcfgContainer [2023-11-19 04:58:42,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:58:42,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:58:42,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:58:42,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:58:42,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:42" (1/3) ... [2023-11-19 04:58:42,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1f8354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:42, skipping insertion in model container [2023-11-19 04:58:42,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:42" (2/3) ... [2023-11-19 04:58:42,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1f8354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:42, skipping insertion in model container [2023-11-19 04:58:42,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:42" (3/3) ... [2023-11-19 04:58:42,840 INFO L112 eAbstractionObserver]: Analyzing ICFG java_Nested.c [2023-11-19 04:58:42,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:58:42,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 04:58:42,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:58:42,965 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53ea38db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:58:42,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 04:58:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:58:42,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:42,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:58:42,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2365646, now seen corresponding path program 1 times [2023-11-19 04:58:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844061420] [2023-11-19 04:58:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:43,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:43,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844061420] [2023-11-19 04:58:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844061420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:58:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768969096] [2023-11-19 04:58:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,359 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:43,465 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2023-11-19 04:58:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:43,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:58:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:43,478 INFO L225 Difference]: With dead ends: 48 [2023-11-19 04:58:43,479 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 04:58:43,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,487 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:43,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 04:58:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-19 04:58:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-19 04:58:43,537 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 4 [2023-11-19 04:58:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:43,538 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-19 04:58:43,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-19 04:58:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:58:43,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:43,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:58:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:58:43,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:43,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2364701, now seen corresponding path program 1 times [2023-11-19 04:58:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:43,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832029161] [2023-11-19 04:58:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:43,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832029161] [2023-11-19 04:58:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832029161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317235814] [2023-11-19 04:58:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,629 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:43,697 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2023-11-19 04:58:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:58:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:43,700 INFO L225 Difference]: With dead ends: 28 [2023-11-19 04:58:43,700 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 04:58:43,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,703 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:43,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 04:58:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-11-19 04:58:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-19 04:58:43,713 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 4 [2023-11-19 04:58:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:43,714 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-19 04:58:43,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 04:58:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:58:43,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:43,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:58:43,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:58:43,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:43,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2022487905, now seen corresponding path program 1 times [2023-11-19 04:58:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501609115] [2023-11-19 04:58:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:43,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501609115] [2023-11-19 04:58:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501609115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192703057] [2023-11-19 04:58:43,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,804 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:43,825 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-11-19 04:58:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:58:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:43,827 INFO L225 Difference]: With dead ends: 26 [2023-11-19 04:58:43,827 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 04:58:43,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,830 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:43,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 04:58:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-19 04:58:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-19 04:58:43,840 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 6 [2023-11-19 04:58:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:43,840 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-19 04:58:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-19 04:58:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:58:43,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:43,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:43,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:58:43,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:43,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1727384443, now seen corresponding path program 1 times [2023-11-19 04:58:43,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:43,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952306147] [2023-11-19 04:58:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:43,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:43,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952306147] [2023-11-19 04:58:43,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952306147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:43,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146265388] [2023-11-19 04:58:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,891 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:43,909 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-11-19 04:58:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:58:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:43,911 INFO L225 Difference]: With dead ends: 32 [2023-11-19 04:58:43,911 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 04:58:43,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:43,914 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:43,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 04:58:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-19 04:58:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-19 04:58:43,924 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2023-11-19 04:58:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:43,924 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-19 04:58:43,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-19 04:58:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:58:43,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:43,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:43,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:58:43,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:43,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2009310241, now seen corresponding path program 1 times [2023-11-19 04:58:43,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:43,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347344189] [2023-11-19 04:58:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:44,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347344189] [2023-11-19 04:58:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347344189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:58:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262489311] [2023-11-19 04:58:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:44,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:44,017 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:44,049 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-11-19 04:58:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:58:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:44,051 INFO L225 Difference]: With dead ends: 31 [2023-11-19 04:58:44,052 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 04:58:44,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:44,054 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 04:58:44,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 04:58:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-19 04:58:44,065 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2023-11-19 04:58:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:44,065 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-19 04:58:44,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-19 04:58:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:58:44,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:44,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:58:44,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:44,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 402247408, now seen corresponding path program 1 times [2023-11-19 04:58:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592021798] [2023-11-19 04:58:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:44,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592021798] [2023-11-19 04:58:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592021798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515610567] [2023-11-19 04:58:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:44,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,130 INFO L87 Difference]: Start difference. First operand 29 states and 31 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) [2023-11-19 04:58:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:44,146 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-19 04:58:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:44,147 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 [2023-11-19 04:58:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:44,148 INFO L225 Difference]: With dead ends: 29 [2023-11-19 04:58:44,148 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 04:58:44,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,151 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:44,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 04:58:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-19 04:58:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-19 04:58:44,161 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 11 [2023-11-19 04:58:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:44,162 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-19 04:58:44,162 INFO L496 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) [2023-11-19 04:58:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-19 04:58:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:58:44,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:44,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:58:44,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:44,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -415232171, now seen corresponding path program 1 times [2023-11-19 04:58:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420394418] [2023-11-19 04:58:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:44,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:44,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420394418] [2023-11-19 04:58:44,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420394418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:44,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235443338] [2023-11-19 04:58:44,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:44,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,232 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:44,264 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-11-19 04:58:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:58:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:44,266 INFO L225 Difference]: With dead ends: 43 [2023-11-19 04:58:44,266 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 04:58:44,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,268 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 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 [2023-11-19 04:58:44,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 04:58:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-11-19 04:58:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-11-19 04:58:44,290 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 12 [2023-11-19 04:58:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:44,291 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-11-19 04:58:44,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-11-19 04:58:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:58:44,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:44,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:58:44,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash -415261481, now seen corresponding path program 1 times [2023-11-19 04:58:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593039908] [2023-11-19 04:58:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:44,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593039908] [2023-11-19 04:58:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593039908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:44,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:44,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:44,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870919252] [2023-11-19 04:58:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:44,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,381 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:44,427 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-19 04:58:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:44,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:58:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:44,429 INFO L225 Difference]: With dead ends: 39 [2023-11-19 04:58:44,429 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 04:58:44,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:44,432 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:44,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:44,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 04:58:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2023-11-19 04:58:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 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) [2023-11-19 04:58:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-19 04:58:44,442 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 12 [2023-11-19 04:58:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:44,442 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-19 04:58:44,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-19 04:58:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:58:44,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:44,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:44,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:58:44,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 365677081, now seen corresponding path program 1 times [2023-11-19 04:58:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964242915] [2023-11-19 04:58:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:44,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964242915] [2023-11-19 04:58:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964242915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562547956] [2023-11-19 04:58:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:44,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:44,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:58:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:44,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:44,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:44,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562547956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1709101436] [2023-11-19 04:58:44,786 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:58:44,790 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:44,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:44,803 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:44,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:45,303 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:45,496 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '716#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:45,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:45,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:45,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 04:58:45,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170249505] [2023-11-19 04:58:45,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:45,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:58:45,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:45,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:58:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:58:45,510 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:45,581 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2023-11-19 04:58:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:58:45,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 04:58:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:45,583 INFO L225 Difference]: With dead ends: 87 [2023-11-19 04:58:45,583 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 04:58:45,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:58:45,585 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:45,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 46 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 04:58:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-11-19 04:58:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.146341463414634) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2023-11-19 04:58:45,608 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2023-11-19 04:58:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:45,609 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2023-11-19 04:58:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2023-11-19 04:58:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:58:45,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:45,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-19 04:58:45,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:45,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 04:58:45,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:45,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1769200146, now seen corresponding path program 1 times [2023-11-19 04:58:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357149031] [2023-11-19 04:58:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:58:45,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357149031] [2023-11-19 04:58:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357149031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967258432] [2023-11-19 04:58:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:45,928 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:45,944 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2023-11-19 04:58:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 04:58:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:45,946 INFO L225 Difference]: With dead ends: 84 [2023-11-19 04:58:45,946 INFO L226 Difference]: Without dead ends: 83 [2023-11-19 04:58:45,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:45,948 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:45,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-19 04:58:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 52. [2023-11-19 04:58:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-11-19 04:58:45,964 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 23 [2023-11-19 04:58:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:45,965 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-11-19 04:58:45,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-11-19 04:58:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:58:45,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:45,967 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-19 04:58:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:58:45,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:45,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1371586555, now seen corresponding path program 2 times [2023-11-19 04:58:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595656729] [2023-11-19 04:58:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:46,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595656729] [2023-11-19 04:58:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595656729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552625243] [2023-11-19 04:58:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:58:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:46,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:46,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:58:46,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 04:58:46,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:58:46,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:58:46,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:46,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552625243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:46,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [228932897] [2023-11-19 04:58:46,471 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:58:46,471 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:46,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:46,472 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:46,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:46,681 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:46,941 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:46,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:46,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:46,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 04:58:46,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809792342] [2023-11-19 04:58:46,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:58:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:58:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:58:46,945 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:47,040 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2023-11-19 04:58:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:58:47,041 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2023-11-19 04:58:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:47,043 INFO L225 Difference]: With dead ends: 119 [2023-11-19 04:58:47,043 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 04:58:47,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:58:47,045 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 69 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:47,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 89 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 04:58:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-19 04:58:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2023-11-19 04:58:47,064 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 35 [2023-11-19 04:58:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:47,064 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2023-11-19 04:58:47,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2023-11-19 04:58:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 04:58:47,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:47,069 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-19 04:58:47,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:47,284 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:47,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1582553413, now seen corresponding path program 3 times [2023-11-19 04:58:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614466839] [2023-11-19 04:58:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:47,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614466839] [2023-11-19 04:58:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614466839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367984372] [2023-11-19 04:58:47,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:58:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:47,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:47,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:58:47,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:58:47,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:58:47,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 04:58:47,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:58:48,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367984372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:48,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:58:48,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 24 [2023-11-19 04:58:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810137263] [2023-11-19 04:58:48,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:58:48,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:58:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:58:48,077 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:48,262 INFO L93 Difference]: Finished difference Result 482 states and 537 transitions. [2023-11-19 04:58:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:58:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 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 [2023-11-19 04:58:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:48,269 INFO L225 Difference]: With dead ends: 482 [2023-11-19 04:58:48,269 INFO L226 Difference]: Without dead ends: 466 [2023-11-19 04:58:48,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:58:48,272 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:48,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 70 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-19 04:58:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2023-11-19 04:58:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.1334792122538293) internal successors, (518), 457 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 518 transitions. [2023-11-19 04:58:48,354 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 518 transitions. Word has length 77 [2023-11-19 04:58:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:48,357 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 518 transitions. [2023-11-19 04:58:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 518 transitions. [2023-11-19 04:58:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:58:48,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:48,370 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-19 04:58:48,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:48,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:48,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:48,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1502045668, now seen corresponding path program 1 times [2023-11-19 04:58:48,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:48,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928591335] [2023-11-19 04:58:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:48,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-19 04:58:48,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:48,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928591335] [2023-11-19 04:58:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928591335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468875524] [2023-11-19 04:58:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:48,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:48,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:48,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:48,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:58:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:48,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:58:48,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-19 04:58:48,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-19 04:58:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468875524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [402865685] [2023-11-19 04:58:49,010 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 04:58:49,011 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:49,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:49,011 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:49,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:49,525 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:50,093 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3459#(and (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:50,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:50,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-19 04:58:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084455084] [2023-11-19 04:58:50,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:50,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:58:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:58:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:58:50,096 INFO L87 Difference]: Start difference. First operand 458 states and 518 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:50,200 INFO L93 Difference]: Finished difference Result 605 states and 682 transitions. [2023-11-19 04:58:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:58:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 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 81 [2023-11-19 04:58:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:50,203 INFO L225 Difference]: With dead ends: 605 [2023-11-19 04:58:50,203 INFO L226 Difference]: Without dead ends: 213 [2023-11-19 04:58:50,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 210 SyntacticMatches, 22 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:58:50,213 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:50,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-19 04:58:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 208. [2023-11-19 04:58:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0724637681159421) internal successors, (222), 207 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2023-11-19 04:58:50,230 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 81 [2023-11-19 04:58:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:50,231 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2023-11-19 04:58:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2023-11-19 04:58:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:58:50,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:50,245 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-19 04:58:50,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:58:50,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:50,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 603999588, now seen corresponding path program 2 times [2023-11-19 04:58:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757898687] [2023-11-19 04:58:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 204 proven. 111 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-19 04:58:50,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757898687] [2023-11-19 04:58:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757898687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721326751] [2023-11-19 04:58:50,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:58:50,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:50,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:50,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:58:50,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-19 04:58:50,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:58:50,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:58:50,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 204 proven. 111 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-19 04:58:50,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 204 proven. 111 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-19 04:58:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721326751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [659494853] [2023-11-19 04:58:51,113 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 04:58:51,113 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:51,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:51,114 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:51,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:51,481 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:52,130 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4909#(and (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:52,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:52,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-19 04:58:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346355999] [2023-11-19 04:58:52,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:58:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:58:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:58:52,133 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:52,218 INFO L93 Difference]: Finished difference Result 284 states and 301 transitions. [2023-11-19 04:58:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:58:52,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 81 [2023-11-19 04:58:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:52,220 INFO L225 Difference]: With dead ends: 284 [2023-11-19 04:58:52,220 INFO L226 Difference]: Without dead ends: 150 [2023-11-19 04:58:52,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 205 SyntacticMatches, 33 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:58:52,222 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:52,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 35 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-19 04:58:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2023-11-19 04:58:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0638297872340425) internal successors, (150), 141 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2023-11-19 04:58:52,234 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 81 [2023-11-19 04:58:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:52,234 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2023-11-19 04:58:52,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2023-11-19 04:58:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:58:52,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:52,236 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-19 04:58:52,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:58:52,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:52,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1410955406, now seen corresponding path program 3 times [2023-11-19 04:58:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:52,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039415515] [2023-11-19 04:58:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:52,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:52,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039415515] [2023-11-19 04:58:52,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039415515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:52,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365355277] [2023-11-19 04:58:52,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:58:52,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:52,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:52,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:58:52,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:58:52,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:58:52,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:58:52,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:52,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:53,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365355277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:53,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020380635] [2023-11-19 04:58:53,347 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 04:58:53,347 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:53,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:53,348 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:53,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:53,695 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:54,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5918#(and (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:54,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:54,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 04:58:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965392075] [2023-11-19 04:58:54,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:58:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:58:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:58:54,406 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand has 24 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:54,525 INFO L93 Difference]: Finished difference Result 231 states and 250 transitions. [2023-11-19 04:58:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 04:58:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 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 81 [2023-11-19 04:58:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:54,528 INFO L225 Difference]: With dead ends: 231 [2023-11-19 04:58:54,529 INFO L226 Difference]: Without dead ends: 230 [2023-11-19 04:58:54,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 200 SyntacticMatches, 22 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:58:54,531 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:54,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-19 04:58:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-11-19 04:58:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.039301310043668) internal successors, (238), 229 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2023-11-19 04:58:54,547 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 81 [2023-11-19 04:58:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:54,548 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 238 transitions. [2023-11-19 04:58:54,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 238 transitions. [2023-11-19 04:58:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 04:58:54,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:54,550 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 3, 2, 2, 2, 1, 1] [2023-11-19 04:58:54,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:58:54,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:54,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1198210715, now seen corresponding path program 4 times [2023-11-19 04:58:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732346060] [2023-11-19 04:58:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1779 backedges. 0 proven. 1777 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:58:55,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732346060] [2023-11-19 04:58:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732346060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681050345] [2023-11-19 04:58:55,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 04:58:55,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:55,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:55,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:58:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:55,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 04:58:55,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1779 backedges. 0 proven. 1777 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:58:56,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1779 backedges. 0 proven. 1777 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:58:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681050345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [329722313] [2023-11-19 04:58:57,428 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 04:58:57,428 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:57,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:57,429 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:57,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:57,729 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:59,430 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7519#(and (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:58:59,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:58:59,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:58:59,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-19 04:58:59,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706247509] [2023-11-19 04:58:59,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:59,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 04:58:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 04:58:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1927, Unknown=0, NotChecked=0, Total=3080 [2023-11-19 04:58:59,438 INFO L87 Difference]: Start difference. First operand 230 states and 238 transitions. Second operand has 48 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:59,703 INFO L93 Difference]: Finished difference Result 411 states and 442 transitions. [2023-11-19 04:58:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 04:58:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 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 169 [2023-11-19 04:58:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:59,707 INFO L225 Difference]: With dead ends: 411 [2023-11-19 04:58:59,708 INFO L226 Difference]: Without dead ends: 410 [2023-11-19 04:58:59,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 427 SyntacticMatches, 47 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1153, Invalid=1927, Unknown=0, NotChecked=0, Total=3080 [2023-11-19 04:58:59,711 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:59,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 290 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:58:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-19 04:58:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-11-19 04:58:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.02200488997555) internal successors, (418), 409 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 418 transitions. [2023-11-19 04:58:59,735 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 418 transitions. Word has length 169 [2023-11-19 04:58:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:59,736 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 418 transitions. [2023-11-19 04:58:59,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 418 transitions. [2023-11-19 04:58:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 04:58:59,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:59,744 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 6, 5, 5, 5, 1, 1] [2023-11-19 04:58:59,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:59,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:58:59,952 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:58:59,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1382603954, now seen corresponding path program 5 times [2023-11-19 04:58:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112993260] [2023-11-19 04:58:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:59,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:03,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:03,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112993260] [2023-11-19 04:59:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112993260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584040085] [2023-11-19 04:59:03,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:59:03,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:03,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:03,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:59:03,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2023-11-19 04:59:03,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:03,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 04:59:03,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:04,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584040085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [105140295] [2023-11-19 04:59:08,179 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 04:59:08,180 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:08,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:08,180 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:08,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:08,471 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:13,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10668#(and (<= 2 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 04:59:13,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:13,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-19 04:59:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280258298] [2023-11-19 04:59:13,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:13,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-19 04:59:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-19 04:59:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4585, Invalid=6127, Unknown=0, NotChecked=0, Total=10712 [2023-11-19 04:59:13,388 INFO L87 Difference]: Start difference. First operand 410 states and 418 transitions. Second operand has 96 states, 95 states have (on average 7.347368421052631) internal successors, (698), 95 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:14,083 INFO L93 Difference]: Finished difference Result 767 states and 822 transitions. [2023-11-19 04:59:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-19 04:59:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 7.347368421052631) internal successors, (698), 95 states have internal predecessors, (698), 0 states have call successors, (0), 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 349 [2023-11-19 04:59:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:14,090 INFO L225 Difference]: With dead ends: 767 [2023-11-19 04:59:14,091 INFO L226 Difference]: Without dead ends: 766 [2023-11-19 04:59:14,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 892 SyntacticMatches, 98 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15009 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4585, Invalid=6127, Unknown=0, NotChecked=0, Total=10712 [2023-11-19 04:59:14,097 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:14,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 572 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:59:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-19 04:59:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2023-11-19 04:59:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.011764705882353) internal successors, (774), 765 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 774 transitions. [2023-11-19 04:59:14,139 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 774 transitions. Word has length 349 [2023-11-19 04:59:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:14,140 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 774 transitions. [2023-11-19 04:59:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 7.347368421052631) internal successors, (698), 95 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 774 transitions. [2023-11-19 04:59:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-19 04:59:14,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:14,161 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 11, 10, 10, 10, 1, 1] [2023-11-19 04:59:14,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 04:59:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 04:59:14,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:59:14,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 763791643, now seen corresponding path program 6 times [2023-11-19 04:59:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:14,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746157179] [2023-11-19 04:59:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32207 backedges. 0 proven. 32197 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:25,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746157179] [2023-11-19 04:59:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746157179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566662037] [2023-11-19 04:59:25,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:59:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:26,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:26,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:59:26,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:59:26,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:26,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:59:26,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 32207 backedges. 29535 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2023-11-19 04:59:27,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:27,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566662037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:27,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:59:27,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [95] total 107 [2023-11-19 04:59:27,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280606159] [2023-11-19 04:59:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:27,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:59:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:59:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4733, Invalid=6823, Unknown=0, NotChecked=0, Total=11556 [2023-11-19 04:59:27,583 INFO L87 Difference]: Start difference. First operand 766 states and 774 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:27,687 INFO L93 Difference]: Finished difference Result 766 states and 774 transitions. [2023-11-19 04:59:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:59:27,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 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 705 [2023-11-19 04:59:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:27,690 INFO L225 Difference]: With dead ends: 766 [2023-11-19 04:59:27,690 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:59:27,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4733, Invalid=6823, Unknown=0, NotChecked=0, Total=11556 [2023-11-19 04:59:27,697 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:27,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:59:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:59:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:59:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:59:27,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 705 [2023-11-19 04:59:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:59:27,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:59:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:59:27,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:59:27,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-19 04:59:27,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-11-19 04:59:27,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-11-19 04:59:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-19 04:59:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-19 04:59:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-19 04:59:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-19 04:59:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-19 04:59:27,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faeb32f7-d4d6-4411-a16f-1d8c4db4d17c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:59:27,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.