./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-nla/egcd-both-t.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-nla/egcd-both-t.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX --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 32bit --witnessprinter.graph.data.programhash e7efe18bdab4f1a3c265c6e5c60639885ed9cc4b50c9311d2c96f86da4a31387 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:54:52,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:52,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:54:52,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:52,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:52,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:52,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:52,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:52,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:52,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:52,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:52,921 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:52,922 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:52,922 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:54:52,923 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:52,923 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:52,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:54:52,925 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:54:52,925 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:52,926 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:54:52,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:54:52,930 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:54:52,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:52,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:52,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:54:52,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:54:52,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:54:52,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:52,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:52,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:52,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:52,936 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:54:52,937 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:54:52,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:54:52,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:52,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:52,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:52,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:52,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:52,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:52,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:52,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:52,941 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:54:52,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:54:52,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:52,941 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:52,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:52,942 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_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7efe18bdab4f1a3c265c6e5c60639885ed9cc4b50c9311d2c96f86da4a31387 [2023-11-12 00:54:53,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:53,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:53,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:53,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:53,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:53,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/termination-nla/egcd-both-t.c [2023-11-12 00:54:56,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:56,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:56,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/sv-benchmarks/c/termination-nla/egcd-both-t.c [2023-11-12 00:54:56,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/data/84ba75565/d20f60c2526e4f4f8f15d03ff1f29f4d/FLAG8739255c6 [2023-11-12 00:54:56,710 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/data/84ba75565/d20f60c2526e4f4f8f15d03ff1f29f4d [2023-11-12 00:54:56,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:56,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:56,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:56,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:56,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:56,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3996ac1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56, skipping insertion in model container [2023-11-12 00:54:56,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:56,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:56,900 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:56,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:56,931 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:56,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56 WrapperNode [2023-11-12 00:54:56,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:56,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:56,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:56,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:56,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,967 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-11-12 00:54:56,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:56,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:56,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:56,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:56,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:56,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:56,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:56,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:56,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:57,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (1/1) ... [2023-11-12 00:54:57,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:57,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:57,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:57,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:57,131 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:57,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:57,386 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:57,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:57,420 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:54:57,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:57 BoogieIcfgContainer [2023-11-12 00:54:57,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:57,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:57,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:57,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:57,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:56" (1/3) ... [2023-11-12 00:54:57,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf5259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:57, skipping insertion in model container [2023-11-12 00:54:57,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:56" (2/3) ... [2023-11-12 00:54:57,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf5259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:57, skipping insertion in model container [2023-11-12 00:54:57,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:57" (3/3) ... [2023-11-12 00:54:57,441 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-both-t.c [2023-11-12 00:54:57,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:57,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-12 00:54:57,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:57,548 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;@1d0e7729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:57,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-12 00:54:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:54:57,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:57,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:54:57,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:54:57,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash 106836, now seen corresponding path program 1 times [2023-11-12 00:54:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:57,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006023724] [2023-11-12 00:54:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:57,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:57,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:57,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484053763] [2023-11-12 00:54:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:57,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:57,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:54:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:57,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:54:57,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:57,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:57,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006023724] [2023-11-12 00:54:57,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484053763] [2023-11-12 00:54:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484053763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:57,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:57,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:54:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264123231] [2023-11-12 00:54:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:57,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:54:57,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:54:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:54:57,976 INFO L87 Difference]: Start difference. First operand has 54 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:58,185 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2023-11-12 00:54:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:54:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:54:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:58,200 INFO L225 Difference]: With dead ends: 107 [2023-11-12 00:54:58,200 INFO L226 Difference]: Without dead ends: 101 [2023-11-12 00:54:58,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:54:58,212 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 154 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 52 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:54:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-12 00:54:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2023-11-12 00:54:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2023-11-12 00:54:58,253 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 3 [2023-11-12 00:54:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:58,254 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2023-11-12 00:54:58,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2023-11-12 00:54:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:54:58,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:58,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:54:58,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:54:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:54:58,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:54:58,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 3311959, now seen corresponding path program 1 times [2023-11-12 00:54:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:58,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789153581] [2023-11-12 00:54:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:58,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754048474] [2023-11-12 00:54:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:58,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:58,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:58,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:54:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:58,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:54:58,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:58,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:58,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:58,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789153581] [2023-11-12 00:54:58,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754048474] [2023-11-12 00:54:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754048474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:58,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:58,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:54:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106103580] [2023-11-12 00:54:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:58,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:54:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:54:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:54:58,561 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:58,701 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2023-11-12 00:54:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:54:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:54:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:58,707 INFO L225 Difference]: With dead ends: 101 [2023-11-12 00:54:58,707 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 00:54:58,710 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 [2023-11-12 00:54:58,711 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 146 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:58,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:54:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 00:54:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2023-11-12 00:54:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.875) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2023-11-12 00:54:58,744 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 4 [2023-11-12 00:54:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:58,745 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2023-11-12 00:54:58,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2023-11-12 00:54:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:54:58,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:58,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:54:58,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 00:54:58,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 00:54:58,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:54:58,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 102670774, now seen corresponding path program 1 times [2023-11-12 00:54:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666609527] [2023-11-12 00:54:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:58,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907519218] [2023-11-12 00:54:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:58,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:58,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:54:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:59,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:54:59,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:59,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:59,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666609527] [2023-11-12 00:54:59,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907519218] [2023-11-12 00:54:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907519218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:59,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:59,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:54:59,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16037403] [2023-11-12 00:54:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:59,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:54:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:59,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:54:59,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:54:59,066 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:59,142 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2023-11-12 00:54:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:54:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:54:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:59,144 INFO L225 Difference]: With dead ends: 96 [2023-11-12 00:54:59,144 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:54:59,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:54:59,146 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:59,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 54 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:54:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:54:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72. [2023-11-12 00:54:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 71 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2023-11-12 00:54:59,154 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 5 [2023-11-12 00:54:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:59,154 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2023-11-12 00:54:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2023-11-12 00:54:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:54:59,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:59,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:54:59,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:54:59,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:59,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:54:59,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1112173255, now seen corresponding path program 1 times [2023-11-12 00:54:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763253345] [2023-11-12 00:54:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:59,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203774834] [2023-11-12 00:54:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:59,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:54:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:59,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:54:59,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:59,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:59,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763253345] [2023-11-12 00:54:59,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203774834] [2023-11-12 00:54:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203774834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:54:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279561284] [2023-11-12 00:54:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:54:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:54:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:54:59,447 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:59,521 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2023-11-12 00:54:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:54:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:54:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:59,523 INFO L225 Difference]: With dead ends: 95 [2023-11-12 00:54:59,523 INFO L226 Difference]: Without dead ends: 94 [2023-11-12 00:54:59,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:54:59,525 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:59,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:54:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-12 00:54:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2023-11-12 00:54:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2023-11-12 00:54:59,533 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 6 [2023-11-12 00:54:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:59,533 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2023-11-12 00:54:59,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2023-11-12 00:54:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:54:59,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:59,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:59,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-12 00:54:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:59,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:54:59,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -117632488, now seen corresponding path program 1 times [2023-11-12 00:54:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692751718] [2023-11-12 00:54:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:59,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868599418] [2023-11-12 00:54:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:59,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:59,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:54:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:59,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:54:59,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:59,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:59,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692751718] [2023-11-12 00:54:59,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:59,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868599418] [2023-11-12 00:54:59,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868599418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:59,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:59,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:54:59,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104966098] [2023-11-12 00:54:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:59,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:54:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:54:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:54:59,881 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:54:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:00,000 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-11-12 00:55:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:00,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:55:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:00,001 INFO L225 Difference]: With dead ends: 94 [2023-11-12 00:55:00,001 INFO L226 Difference]: Without dead ends: 93 [2023-11-12 00:55:00,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:00,004 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:00,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 38 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-12 00:55:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2023-11-12 00:55:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.8125) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2023-11-12 00:55:00,024 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 7 [2023-11-12 00:55:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:00,024 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2023-11-12 00:55:00,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2023-11-12 00:55:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:55:00,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:00,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:00,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:00,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 648360219, now seen corresponding path program 1 times [2023-11-12 00:55:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015944861] [2023-11-12 00:55:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:00,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267185466] [2023-11-12 00:55:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:00,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:00,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:55:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:00,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:00,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:00,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:00,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015944861] [2023-11-12 00:55:00,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267185466] [2023-11-12 00:55:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267185466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:55:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105362500] [2023-11-12 00:55:00,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:00,316 INFO L87 Difference]: Start difference. First operand 72 states and 87 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) [2023-11-12 00:55:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:00,430 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2023-11-12 00:55:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:00,430 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 [2023-11-12 00:55:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:00,431 INFO L225 Difference]: With dead ends: 101 [2023-11-12 00:55:00,432 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 00:55:00,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:00,433 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:00,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 71 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 00:55:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2023-11-12 00:55:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 71 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2023-11-12 00:55:00,448 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 8 [2023-11-12 00:55:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:00,448 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2023-11-12 00:55:00,448 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) [2023-11-12 00:55:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2023-11-12 00:55:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:55:00,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:00,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:00,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 00:55:00,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:55:00,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:00,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1375669638, now seen corresponding path program 1 times [2023-11-12 00:55:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:00,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6029936] [2023-11-12 00:55:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:00,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:00,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169069427] [2023-11-12 00:55:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:00,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:55:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:00,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:00,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:00,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:00,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6029936] [2023-11-12 00:55:00,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169069427] [2023-11-12 00:55:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169069427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:00,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910854784] [2023-11-12 00:55:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:00,799 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:00,881 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2023-11-12 00:55:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:55:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:00,883 INFO L225 Difference]: With dead ends: 136 [2023-11-12 00:55:00,883 INFO L226 Difference]: Without dead ends: 135 [2023-11-12 00:55:00,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:00,884 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 91 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:00,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-12 00:55:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 106. [2023-11-12 00:55:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.7560975609756098) internal successors, (144), 105 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2023-11-12 00:55:00,893 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 9 [2023-11-12 00:55:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:00,894 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2023-11-12 00:55:00,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2023-11-12 00:55:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:55:00,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:00,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:00,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:01,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:01,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:01,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 303914237, now seen corresponding path program 1 times [2023-11-12 00:55:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:01,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177262682] [2023-11-12 00:55:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:01,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512554129] [2023-11-12 00:55:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:01,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:01,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:55:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:01,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:01,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:01,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:01,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177262682] [2023-11-12 00:55:01,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512554129] [2023-11-12 00:55:01,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512554129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:01,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:01,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754654187] [2023-11-12 00:55:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:01,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:01,231 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:01,303 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2023-11-12 00:55:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:01,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:55:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:01,305 INFO L225 Difference]: With dead ends: 135 [2023-11-12 00:55:01,305 INFO L226 Difference]: Without dead ends: 134 [2023-11-12 00:55:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:01,306 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 126 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-12 00:55:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2023-11-12 00:55:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.7317073170731707) internal successors, (142), 105 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-11-12 00:55:01,319 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 10 [2023-11-12 00:55:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:01,319 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-11-12 00:55:01,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-11-12 00:55:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:55:01,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:01,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:01,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-12 00:55:01,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:55:01,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:01,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 831406812, now seen corresponding path program 1 times [2023-11-12 00:55:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:01,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930137696] [2023-11-12 00:55:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:01,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025531917] [2023-11-12 00:55:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:01,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:01,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:01,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:55:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:01,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:01,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:01,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:01,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:01,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930137696] [2023-11-12 00:55:01,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:01,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025531917] [2023-11-12 00:55:01,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025531917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:01,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:01,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:01,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514770385] [2023-11-12 00:55:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:01,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:01,629 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2023-11-12 00:55:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:01,696 INFO L93 Difference]: Finished difference Result 140 states and 166 transitions. [2023-11-12 00:55:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2023-11-12 00:55:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:01,698 INFO L225 Difference]: With dead ends: 140 [2023-11-12 00:55:01,698 INFO L226 Difference]: Without dead ends: 139 [2023-11-12 00:55:01,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:01,700 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:01,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 54 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:01,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-12 00:55:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 106. [2023-11-12 00:55:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.7073170731707317) internal successors, (140), 105 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2023-11-12 00:55:01,708 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 11 [2023-11-12 00:55:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:01,708 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2023-11-12 00:55:01,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2023-11-12 00:55:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2023-11-12 00:55:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:55:01,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:01,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:01,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-12 00:55:01,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:01,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:01,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash 3807455, now seen corresponding path program 1 times [2023-11-12 00:55:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:01,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147363434] [2023-11-12 00:55:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:01,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:01,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023598316] [2023-11-12 00:55:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:01,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:01,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:01,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:01,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 00:55:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:01,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:01,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:02,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:02,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147363434] [2023-11-12 00:55:02,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023598316] [2023-11-12 00:55:02,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023598316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:02,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:02,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:02,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431344278] [2023-11-12 00:55:02,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:02,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:02,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:02,026 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2023-11-12 00:55:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:02,094 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2023-11-12 00:55:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2023-11-12 00:55:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:02,095 INFO L225 Difference]: With dead ends: 139 [2023-11-12 00:55:02,095 INFO L226 Difference]: Without dead ends: 138 [2023-11-12 00:55:02,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:02,097 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 126 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:02,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-12 00:55:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 106. [2023-11-12 00:55:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 105 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2023-11-12 00:55:02,105 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 12 [2023-11-12 00:55:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:02,105 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2023-11-12 00:55:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2023-11-12 00:55:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2023-11-12 00:55:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:55:02,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:02,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:02,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:02,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:02,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash 118031166, now seen corresponding path program 1 times [2023-11-12 00:55:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581072642] [2023-11-12 00:55:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:02,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207412017] [2023-11-12 00:55:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:02,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:02,321 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:02,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 00:55:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:02,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:55:02,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:02,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:02,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581072642] [2023-11-12 00:55:02,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207412017] [2023-11-12 00:55:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207412017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:02,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113178627] [2023-11-12 00:55:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:02,444 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:02,530 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2023-11-12 00:55:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:55:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:02,532 INFO L225 Difference]: With dead ends: 132 [2023-11-12 00:55:02,532 INFO L226 Difference]: Without dead ends: 131 [2023-11-12 00:55:02,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:02,533 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-12 00:55:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2023-11-12 00:55:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.6585365853658536) internal successors, (136), 105 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2023-11-12 00:55:02,540 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 13 [2023-11-12 00:55:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:02,541 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2023-11-12 00:55:02,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2023-11-12 00:55:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:55:02,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:02,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:02,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:02,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:02,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash -636001087, now seen corresponding path program 1 times [2023-11-12 00:55:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981470048] [2023-11-12 00:55:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:02,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:02,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5917708] [2023-11-12 00:55:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:02,757 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:02,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 00:55:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:02,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:02,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:02,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:02,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:02,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981470048] [2023-11-12 00:55:02,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5917708] [2023-11-12 00:55:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5917708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:55:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406589870] [2023-11-12 00:55:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:02,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:02,841 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:02,910 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2023-11-12 00:55:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:55:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:02,912 INFO L225 Difference]: With dead ends: 131 [2023-11-12 00:55:02,912 INFO L226 Difference]: Without dead ends: 130 [2023-11-12 00:55:02,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:02,913 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:02,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-12 00:55:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 106. [2023-11-12 00:55:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.6341463414634145) internal successors, (134), 105 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2023-11-12 00:55:02,920 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 14 [2023-11-12 00:55:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:02,921 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2023-11-12 00:55:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2023-11-12 00:55:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:55:02,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:02,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:02,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-12 00:55:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:03,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2007572091, now seen corresponding path program 1 times [2023-11-12 00:55:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:03,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716966294] [2023-11-12 00:55:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:03,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437431156] [2023-11-12 00:55:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:03,137 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:03,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 00:55:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:03,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:55:03,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:03,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:03,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:03,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716966294] [2023-11-12 00:55:03,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:03,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437431156] [2023-11-12 00:55:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437431156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:03,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:03,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:03,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078446006] [2023-11-12 00:55:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:03,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:03,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:03,184 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:03,200 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2023-11-12 00:55:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:03,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-12 00:55:03,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:03,202 INFO L225 Difference]: With dead ends: 106 [2023-11-12 00:55:03,202 INFO L226 Difference]: Without dead ends: 105 [2023-11-12 00:55:03,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:03,203 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:03,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 89 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:55:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-12 00:55:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-12 00:55:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.6097560975609757) internal successors, (132), 104 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2023-11-12 00:55:03,210 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 17 [2023-11-12 00:55:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:03,210 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2023-11-12 00:55:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2023-11-12 00:55:03,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:55:03,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:03,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:03,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:03,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:03,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2007572539, now seen corresponding path program 1 times [2023-11-12 00:55:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450113928] [2023-11-12 00:55:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:03,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303329763] [2023-11-12 00:55:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:03,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 00:55:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:03,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:55:03,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:03,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:03,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:03,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450113928] [2023-11-12 00:55:03,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:03,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303329763] [2023-11-12 00:55:03,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303329763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:03,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:03,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946895678] [2023-11-12 00:55:03,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:03,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:03,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:03,495 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:03,509 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2023-11-12 00:55:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:03,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-12 00:55:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:03,511 INFO L225 Difference]: With dead ends: 105 [2023-11-12 00:55:03,511 INFO L226 Difference]: Without dead ends: 104 [2023-11-12 00:55:03,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:03,512 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:03,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 88 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:55:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-12 00:55:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-12 00:55:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.5853658536585367) internal successors, (130), 103 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2023-11-12 00:55:03,518 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 17 [2023-11-12 00:55:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:03,520 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2023-11-12 00:55:03,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2023-11-12 00:55:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:55:03,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:03,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:03,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-12 00:55:03,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:03,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2105192588, now seen corresponding path program 1 times [2023-11-12 00:55:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539835436] [2023-11-12 00:55:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:03,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089708165] [2023-11-12 00:55:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:03,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:03,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 00:55:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:03,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:55:03,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:03,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:03,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:03,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539835436] [2023-11-12 00:55:03,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:03,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089708165] [2023-11-12 00:55:03,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089708165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:03,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:03,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:03,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082842080] [2023-11-12 00:55:03,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:03,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:03,917 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:04,009 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2023-11-12 00:55:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 00:55:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:04,011 INFO L225 Difference]: With dead ends: 120 [2023-11-12 00:55:04,011 INFO L226 Difference]: Without dead ends: 119 [2023-11-12 00:55:04,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:55:04,012 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:04,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 49 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-12 00:55:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2023-11-12 00:55:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 103 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-11-12 00:55:04,019 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 18 [2023-11-12 00:55:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:04,019 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-11-12 00:55:04,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-11-12 00:55:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:55:04,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:04,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:04,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 00:55:04,226 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2105206490, now seen corresponding path program 1 times [2023-11-12 00:55:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524985736] [2023-11-12 00:55:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:04,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:04,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330410608] [2023-11-12 00:55:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:04,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:04,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:04,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:04,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 00:55:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:04,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:55:04,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:04,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:04,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:04,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524985736] [2023-11-12 00:55:04,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:04,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330410608] [2023-11-12 00:55:04,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330410608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:04,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:04,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561082018] [2023-11-12 00:55:04,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:04,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:55:04,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:55:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:55:04,369 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:04,432 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2023-11-12 00:55:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:55:04,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 00:55:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:04,433 INFO L225 Difference]: With dead ends: 120 [2023-11-12 00:55:04,433 INFO L226 Difference]: Without dead ends: 119 [2023-11-12 00:55:04,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:55:04,435 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:04,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 49 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-12 00:55:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2023-11-12 00:55:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.5609756097560976) internal successors, (128), 103 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) [2023-11-12 00:55:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2023-11-12 00:55:04,441 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 18 [2023-11-12 00:55:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:04,441 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2023-11-12 00:55:04,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2023-11-12 00:55:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:55:04,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:04,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:04,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 00:55:04,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:04,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -836460697, now seen corresponding path program 1 times [2023-11-12 00:55:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115745386] [2023-11-12 00:55:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:04,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:04,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186183434] [2023-11-12 00:55:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:04,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:04,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:04,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:04,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-12 00:55:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:04,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:55:04,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:04,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:04,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115745386] [2023-11-12 00:55:04,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186183434] [2023-11-12 00:55:04,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186183434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446318247] [2023-11-12 00:55:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:04,779 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:04,835 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2023-11-12 00:55:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-12 00:55:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:04,837 INFO L225 Difference]: With dead ends: 125 [2023-11-12 00:55:04,837 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 00:55:04,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:04,838 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:04,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 55 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 00:55:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2023-11-12 00:55:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 109 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2023-11-12 00:55:04,845 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 19 [2023-11-12 00:55:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:04,846 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2023-11-12 00:55:04,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2023-11-12 00:55:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:55:04,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:04,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:04,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:05,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 00:55:05,054 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:05,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash -836891673, now seen corresponding path program 1 times [2023-11-12 00:55:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061341177] [2023-11-12 00:55:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:05,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814156299] [2023-11-12 00:55:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:05,062 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:05,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-12 00:55:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:05,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:55:05,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:05,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:05,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061341177] [2023-11-12 00:55:05,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814156299] [2023-11-12 00:55:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814156299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:05,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:05,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497495724] [2023-11-12 00:55:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,183 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:05,215 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2023-11-12 00:55:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-12 00:55:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:05,219 INFO L225 Difference]: With dead ends: 110 [2023-11-12 00:55:05,219 INFO L226 Difference]: Without dead ends: 108 [2023-11-12 00:55:05,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,220 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:05,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:55:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-12 00:55:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-12 00:55:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 107 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2023-11-12 00:55:05,227 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 19 [2023-11-12 00:55:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:05,227 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2023-11-12 00:55:05,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2023-11-12 00:55:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:55:05,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:05,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:05,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:05,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 00:55:05,435 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:05,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash -679842487, now seen corresponding path program 1 times [2023-11-12 00:55:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:05,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591717894] [2023-11-12 00:55:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:05,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:05,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768727615] [2023-11-12 00:55:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:05,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:05,444 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-12 00:55:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:05,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:55:05,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:05,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:05,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591717894] [2023-11-12 00:55:05,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768727615] [2023-11-12 00:55:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768727615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:05,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:05,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116440193] [2023-11-12 00:55:05,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:05,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:05,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:05,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,548 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-11-12 00:55:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:05,579 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2023-11-12 00:55:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) Word has length 21 [2023-11-12 00:55:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:05,581 INFO L225 Difference]: With dead ends: 108 [2023-11-12 00:55:05,581 INFO L226 Difference]: Without dead ends: 106 [2023-11-12 00:55:05,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,582 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:05,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:55:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-12 00:55:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-12 00:55:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 105 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2023-11-12 00:55:05,587 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 21 [2023-11-12 00:55:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:05,587 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2023-11-12 00:55:05,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-11-12 00:55:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2023-11-12 00:55:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:55:05,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:05,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:05,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:05,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:05,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1094010871, now seen corresponding path program 1 times [2023-11-12 00:55:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:05,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476963867] [2023-11-12 00:55:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:05,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269137784] [2023-11-12 00:55:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:05,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:05,802 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:05,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-12 00:55:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:05,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:55:05,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:05,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:05,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476963867] [2023-11-12 00:55:05,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269137784] [2023-11-12 00:55:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269137784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:05,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:05,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063827823] [2023-11-12 00:55:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:05,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:55:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:55:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,911 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-11-12 00:55:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:05,965 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2023-11-12 00:55:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:55:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) Word has length 21 [2023-11-12 00:55:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:05,967 INFO L225 Difference]: With dead ends: 129 [2023-11-12 00:55:05,967 INFO L226 Difference]: Without dead ends: 127 [2023-11-12 00:55:05,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:55:05,968 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:05,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:55:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-12 00:55:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2023-11-12 00:55:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 115 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2023-11-12 00:55:05,974 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 21 [2023-11-12 00:55:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2023-11-12 00:55:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-11-12 00:55:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2023-11-12 00:55:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:55:05,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:05,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:05,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:06,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,181 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 922543103, now seen corresponding path program 1 times [2023-11-12 00:55:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920473795] [2023-11-12 00:55:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:06,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:06,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517791426] [2023-11-12 00:55:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:06,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:06,188 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:06,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-12 00:55:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:06,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:55:06,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:06,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:07,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920473795] [2023-11-12 00:55:07,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517791426] [2023-11-12 00:55:07,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517791426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:07,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [417339686] [2023-11-12 00:55:07,074 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:07,074 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:07,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:07,083 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:07,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:08,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:10,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5359#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ 2147483649 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483647) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~b~0#1| 2147483646) (<= 2 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-11-12 00:55:10,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:10,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:10,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-12 00:55:10,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536481929] [2023-11-12 00:55:10,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:10,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:55:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:10,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:55:10,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=221, Unknown=1, NotChecked=0, Total=306 [2023-11-12 00:55:10,147 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:10,995 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2023-11-12 00:55:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2023-11-12 00:55:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:10,997 INFO L225 Difference]: With dead ends: 195 [2023-11-12 00:55:10,997 INFO L226 Difference]: Without dead ends: 193 [2023-11-12 00:55:10,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=278, Unknown=1, NotChecked=0, Total=380 [2023-11-12 00:55:10,999 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 249 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:10,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:55:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-12 00:55:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 120. [2023-11-12 00:55:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 119 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2023-11-12 00:55:11,007 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 23 [2023-11-12 00:55:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:11,007 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2023-11-12 00:55:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2023-11-12 00:55:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:55:11,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:11,009 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:11,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:11,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,213 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:11,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1465934836, now seen corresponding path program 1 times [2023-11-12 00:55:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62789615] [2023-11-12 00:55:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:11,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945168811] [2023-11-12 00:55:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:11,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:11,230 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:11,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-12 00:55:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:11,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:55:11,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:11,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:11,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62789615] [2023-11-12 00:55:11,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945168811] [2023-11-12 00:55:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945168811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719892350] [2023-11-12 00:55:11,879 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:11,879 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:11,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:11,880 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:11,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:12,783 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [719892350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:14,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3] total 15 [2023-11-12 00:55:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015622555] [2023-11-12 00:55:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:14,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:55:14,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:55:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:55:14,228 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2023-11-12 00:55:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:16,890 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2023-11-12 00:55:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:55:16,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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 24 [2023-11-12 00:55:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:16,894 INFO L225 Difference]: With dead ends: 128 [2023-11-12 00:55:16,894 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 00:55:16,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:55:16,896 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 8 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:55:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 00:55:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2023-11-12 00:55:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 119 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2023-11-12 00:55:16,903 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 24 [2023-11-12 00:55:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:16,903 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2023-11-12 00:55:16,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2023-11-12 00:55:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2023-11-12 00:55:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 00:55:16,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:16,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:16,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:17,109 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:17,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1231237719, now seen corresponding path program 1 times [2023-11-12 00:55:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309141042] [2023-11-12 00:55:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:17,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009807488] [2023-11-12 00:55:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:17,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:17,118 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-12 00:55:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:17,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:55:17,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:17,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:17,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309141042] [2023-11-12 00:55:17,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009807488] [2023-11-12 00:55:17,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009807488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1326211931] [2023-11-12 00:55:17,679 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:17,679 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:17,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:17,679 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:17,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:18,713 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:22,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6307#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1) (<= (+ 2147483649 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 4294967292 |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-11-12 00:55:22,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:22,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:22,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-12 00:55:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39973482] [2023-11-12 00:55:22,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:22,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:55:22,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:55:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:55:22,697 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:23,536 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2023-11-12 00:55:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:23,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 29 [2023-11-12 00:55:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:23,538 INFO L225 Difference]: With dead ends: 208 [2023-11-12 00:55:23,538 INFO L226 Difference]: Without dead ends: 207 [2023-11-12 00:55:23,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:55:23,539 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 304 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:23,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 91 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:55:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-12 00:55:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2023-11-12 00:55:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 122 states have (on average 1.319672131147541) internal successors, (161), 139 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2023-11-12 00:55:23,549 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 29 [2023-11-12 00:55:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:23,549 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2023-11-12 00:55:23,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2023-11-12 00:55:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 00:55:23,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:23,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:23,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-12 00:55:23,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:23,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:23,756 INFO L85 PathProgramCache]: Analyzing trace with hash -486336320, now seen corresponding path program 1 times [2023-11-12 00:55:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27745119] [2023-11-12 00:55:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:23,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232401069] [2023-11-12 00:55:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:23,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:23,764 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:23,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-12 00:55:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:23,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:55:23,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:24,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:24,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27745119] [2023-11-12 00:55:24,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232401069] [2023-11-12 00:55:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232401069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1284111600] [2023-11-12 00:55:24,315 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:24,315 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:24,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:24,316 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:24,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:25,282 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:28,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1284111600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:28,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3, 3] total 16 [2023-11-12 00:55:28,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622573490] [2023-11-12 00:55:28,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:28,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:55:28,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:55:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:55:28,137 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2023-11-12 00:55:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:30,182 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2023-11-12 00:55:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:55:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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 30 [2023-11-12 00:55:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:30,183 INFO L225 Difference]: With dead ends: 147 [2023-11-12 00:55:30,183 INFO L226 Difference]: Without dead ends: 142 [2023-11-12 00:55:30,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:55:30,185 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:30,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 9 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:55:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-12 00:55:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-11-12 00:55:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 122 states have (on average 1.278688524590164) internal successors, (156), 139 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2023-11-12 00:55:30,197 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 30 [2023-11-12 00:55:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:30,197 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2023-11-12 00:55:30,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2023-11-12 00:55:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2023-11-12 00:55:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 00:55:30,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:30,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:30,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-12 00:55:30,403 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:30,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1573716329, now seen corresponding path program 1 times [2023-11-12 00:55:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:30,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41705152] [2023-11-12 00:55:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:30,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183062126] [2023-11-12 00:55:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:30,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:30,412 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:30,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-12 00:55:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:30,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:55:30,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:30,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:30,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41705152] [2023-11-12 00:55:30,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183062126] [2023-11-12 00:55:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183062126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102555685] [2023-11-12 00:55:30,675 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-12 00:55:30,675 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:30,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:30,675 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:30,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:31,235 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:32,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7428#(and (not (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1| 2147483648)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= |ULTIMATE.start_main_~b~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 2147483644)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-11-12 00:55:32,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:32,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-12 00:55:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810792779] [2023-11-12 00:55:32,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:32,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:55:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:55:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:55:32,558 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:32,715 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2023-11-12 00:55:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:32,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-12 00:55:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:32,716 INFO L225 Difference]: With dead ends: 142 [2023-11-12 00:55:32,717 INFO L226 Difference]: Without dead ends: 141 [2023-11-12 00:55:32,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 16 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2023-11-12 00:55:32,718 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 163 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:32,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 67 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:55:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-12 00:55:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2023-11-12 00:55:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 138 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2023-11-12 00:55:32,729 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 38 [2023-11-12 00:55:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:32,729 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2023-11-12 00:55:32,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2023-11-12 00:55:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 00:55:32,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:32,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:32,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:32,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-12 00:55:32,937 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:32,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash -395153660, now seen corresponding path program 1 times [2023-11-12 00:55:32,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:32,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203549393] [2023-11-12 00:55:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:32,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392808354] [2023-11-12 00:55:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:32,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:32,948 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:32,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-12 00:55:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:32,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:32,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:33,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:33,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203549393] [2023-11-12 00:55:33,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392808354] [2023-11-12 00:55:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392808354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [491180480] [2023-11-12 00:55:33,239 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:33,239 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:33,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:33,240 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:33,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:34,164 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:37,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7978#(and (<= 0 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~q~0#1| 2147483648) 0) (<= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483647) (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483648)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-11-12 00:55:37,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:37,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-12 00:55:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233706207] [2023-11-12 00:55:37,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:55:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:55:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:55:37,648 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:37,985 INFO L93 Difference]: Finished difference Result 328 states and 361 transitions. [2023-11-12 00:55:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-12 00:55:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:37,988 INFO L225 Difference]: With dead ends: 328 [2023-11-12 00:55:37,988 INFO L226 Difference]: Without dead ends: 326 [2023-11-12 00:55:37,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 14 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:55:37,989 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 105 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:37,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 122 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:55:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-12 00:55:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 266. [2023-11-12 00:55:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 249 states have (on average 1.3293172690763053) internal successors, (331), 265 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 331 transitions. [2023-11-12 00:55:38,019 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 331 transitions. Word has length 39 [2023-11-12 00:55:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:38,020 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 331 transitions. [2023-11-12 00:55:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 331 transitions. [2023-11-12 00:55:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:55:38,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:38,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 00:55:38,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-12 00:55:38,226 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:38,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1693923852, now seen corresponding path program 1 times [2023-11-12 00:55:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363591290] [2023-11-12 00:55:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:38,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059675510] [2023-11-12 00:55:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:38,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:38,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:38,237 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:38,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-12 00:55:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:38,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:55:38,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:38,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:38,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363591290] [2023-11-12 00:55:38,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059675510] [2023-11-12 00:55:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059675510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1352809493] [2023-11-12 00:55:38,488 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:38,489 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:38,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:38,489 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:38,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:39,146 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:41,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8863#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483647) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~b~0#1| 2147483646) (<= 2 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ |ULTIMATE.start_main_~r~0#1| 2147483648) 0))' at error location [2023-11-12 00:55:41,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:41,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:41,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-12 00:55:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477023275] [2023-11-12 00:55:41,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:41,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:55:41,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:55:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:55:41,079 INFO L87 Difference]: Start difference. First operand 266 states and 331 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:41,408 INFO L93 Difference]: Finished difference Result 556 states and 690 transitions. [2023-11-12 00:55:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:55:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-12 00:55:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:41,413 INFO L225 Difference]: With dead ends: 556 [2023-11-12 00:55:41,414 INFO L226 Difference]: Without dead ends: 554 [2023-11-12 00:55:41,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:55:41,415 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 161 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:41,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 130 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:55:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-12 00:55:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 468. [2023-11-12 00:55:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 451 states have (on average 1.4035476718403548) internal successors, (633), 467 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 633 transitions. [2023-11-12 00:55:41,460 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 633 transitions. Word has length 41 [2023-11-12 00:55:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:41,460 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 633 transitions. [2023-11-12 00:55:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 633 transitions. [2023-11-12 00:55:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 00:55:41,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:41,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-12 00:55:41,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-12 00:55:41,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:41,667 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-12 00:55:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -68213974, now seen corresponding path program 2 times [2023-11-12 00:55:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495036471] [2023-11-12 00:55:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:41,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:41,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128050230] [2023-11-12 00:55:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:55:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:41,675 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:41,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f011f7e1-a77b-49f7-a952-2cf6df680333/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-12 00:55:42,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:55:42,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:42,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 00:55:42,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:43,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:45,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495036471] [2023-11-12 00:55:45,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128050230] [2023-11-12 00:55:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128050230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972722359] [2023-11-12 00:55:45,124 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-12 00:55:45,124 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:45,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:45,124 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:45,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:55:45,897 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:55:49,313 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10218#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ 2147483649 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483647) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~b~0#1| 2147483646) (<= 2 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-11-12 00:55:49,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:55:49,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:55:49,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2023-11-12 00:55:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764125415] [2023-11-12 00:55:49,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:55:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 00:55:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 00:55:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2023-11-12 00:55:49,316 INFO L87 Difference]: Start difference. First operand 468 states and 633 transitions. Second operand has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:50,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]