./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:50:08,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:50:08,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 17:50:08,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:50:08,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:50:08,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:50:08,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:50:08,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:50:08,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:50:08,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:50:08,947 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:50:08,948 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:50:08,948 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:50:08,949 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:50:08,949 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:50:08,950 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:50:08,950 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:50:08,951 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:50:08,951 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:50:08,952 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:50:08,952 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:50:08,953 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:50:08,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:50:08,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:50:08,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:50:08,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:50:08,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:50:08,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:50:08,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:50:08,956 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:50:08,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:50:08,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:50:08,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:50:08,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:50:08,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:50:08,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:50:08,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:50:08,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:50:08,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:50:08,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:50:08,958 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:50:08,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:50:08,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:50:08,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:50:08,959 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:50:08,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:50:08,960 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_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a [2023-12-02 17:50:09,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:50:09,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:50:09,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:50:09,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:50:09,216 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:50:09,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2023-12-02 17:50:11,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:50:12,113 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:50:12,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2023-12-02 17:50:12,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/data/bf5650683/cc52633e9b3c4e208fe571fb9f1556df/FLAG83eca383b [2023-12-02 17:50:12,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/data/bf5650683/cc52633e9b3c4e208fe571fb9f1556df [2023-12-02 17:50:12,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:50:12,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:50:12,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:12,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:50:12,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:50:12,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a66f48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12, skipping insertion in model container [2023-12-02 17:50:12,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:50:12,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:12,309 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:50:12,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:12,330 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:50:12,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12 WrapperNode [2023-12-02 17:50:12,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:12,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:50:12,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:50:12,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:50:12,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,357 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-12-02 17:50:12,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:50:12,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:50:12,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:50:12,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:50:12,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:50:12,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:50:12,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:50:12,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:50:12,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (1/1) ... [2023-12-02 17:50:12,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:50:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:12,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:50:12,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:50:12,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:50:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:50:12,502 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:50:12,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:50:12,592 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:50:12,616 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:50:12,616 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:50:12,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:12 BoogieIcfgContainer [2023-12-02 17:50:12,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:50:12,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:50:12,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:50:12,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:50:12,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:50:12" (1/3) ... [2023-12-02 17:50:12,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141b7a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:12, skipping insertion in model container [2023-12-02 17:50:12,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:12" (2/3) ... [2023-12-02 17:50:12,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141b7a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:12, skipping insertion in model container [2023-12-02 17:50:12,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:12" (3/3) ... [2023-12-02 17:50:12,629 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2023-12-02 17:50:12,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:50:12,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 17:50:12,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:50:12,692 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;@277dc08a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:50:12,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 17:50:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 17:50:12,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:12,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 17:50:12,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:12,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2023-12-02 17:50:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787700667] [2023-12-02 17:50:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:12,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787700667] [2023-12-02 17:50:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787700667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:12,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:12,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156047206] [2023-12-02 17:50:12,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:12,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:12,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:12,885 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2023-12-02 17:50:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:12,940 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-12-02 17:50:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:12,942 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 [2023-12-02 17:50:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:12,950 INFO L225 Difference]: With dead ends: 31 [2023-12-02 17:50:12,950 INFO L226 Difference]: Without dead ends: 26 [2023-12-02 17:50:12,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:12,957 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:12,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-02 17:50:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-12-02 17:50:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-12-02 17:50:12,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2023-12-02 17:50:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:12,990 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-12-02 17:50:12,991 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) [2023-12-02 17:50:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-12-02 17:50:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 17:50:12,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:12,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 17:50:12,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:50:12,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:12,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2023-12-02 17:50:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753405681] [2023-12-02 17:50:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753405681] [2023-12-02 17:50:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753405681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638505792] [2023-12-02 17:50:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:13,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,036 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2023-12-02 17:50:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,067 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-12-02 17:50:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2023-12-02 17:50:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,069 INFO L225 Difference]: With dead ends: 40 [2023-12-02 17:50:13,069 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 17:50:13,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,071 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 17:50:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-12-02 17:50:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-12-02 17:50:13,080 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2023-12-02 17:50:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,081 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-12-02 17:50:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2023-12-02 17:50:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-12-02 17:50:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:50:13,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:50:13,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:13,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2023-12-02 17:50:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:13,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006763720] [2023-12-02 17:50:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:13,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006763720] [2023-12-02 17:50:13,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006763720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:13,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:13,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:13,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594005696] [2023-12-02 17:50:13,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:13,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,131 INFO L87 Difference]: Start difference. First operand 36 states and 47 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) [2023-12-02 17:50:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,146 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-12-02 17:50:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:13,146 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 [2023-12-02 17:50:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,147 INFO L225 Difference]: With dead ends: 36 [2023-12-02 17:50:13,147 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 17:50:13,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,149 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 17:50:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-02 17:50:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-12-02 17:50:13,158 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2023-12-02 17:50:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,158 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-12-02 17:50:13,159 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) [2023-12-02 17:50:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-12-02 17:50:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:50:13,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:50:13,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:13,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2023-12-02 17:50:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220234107] [2023-12-02 17:50:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220234107] [2023-12-02 17:50:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220234107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:13,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112629998] [2023-12-02 17:50:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,203 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-12-02 17:50:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,221 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-12-02 17:50:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2023-12-02 17:50:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,223 INFO L225 Difference]: With dead ends: 41 [2023-12-02 17:50:13,223 INFO L226 Difference]: Without dead ends: 40 [2023-12-02 17:50:13,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:13,225 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-02 17:50:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-02 17:50:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-12-02 17:50:13,233 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-12-02 17:50:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,234 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-12-02 17:50:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2023-12-02 17:50:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-12-02 17:50:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 17:50:13,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,235 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:50:13,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:13,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2023-12-02 17:50:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400585871] [2023-12-02 17:50:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:13,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400585871] [2023-12-02 17:50:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400585871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795801571] [2023-12-02 17:50:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:13,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:13,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:13,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:50:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:50:13,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795801571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70492954] [2023-12-02 17:50:13,496 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 17:50:13,497 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:13,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:13,506 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:13,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:13,741 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:13,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet1#1_19| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet1#1_19| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet1#1_19| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet1#1_19| 0)))) (<= (+ 2147483650 |ULTIMATE.start_main_~a~0#1|) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:13,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:13,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-02 17:50:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620582381] [2023-12-02 17:50:13,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:50:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:13,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:50:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:13,925 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,978 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-12-02 17:50:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:50:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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 11 [2023-12-02 17:50:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,981 INFO L225 Difference]: With dead ends: 81 [2023-12-02 17:50:13,981 INFO L226 Difference]: Without dead ends: 79 [2023-12-02 17:50:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:13,983 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-02 17:50:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2023-12-02 17:50:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-12-02 17:50:13,993 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 11 [2023-12-02 17:50:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,993 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-12-02 17:50:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-12-02 17:50:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:50:13,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:14,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:50:14,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:14,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:14,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2023-12-02 17:50:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:14,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382490684] [2023-12-02 17:50:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:14,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:14,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:14,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382490684] [2023-12-02 17:50:14,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382490684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:14,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848273424] [2023-12-02 17:50:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:14,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:14,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:14,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:50:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:14,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:50:14,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:14,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848273424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348207649] [2023-12-02 17:50:14,328 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:14,329 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:14,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:14,329 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:14,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:14,628 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:14,873 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '634#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:14,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:14,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-02 17:50:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475352714] [2023-12-02 17:50:14,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:14,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:50:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:50:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:14,876 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2023-12-02 17:50:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:14,942 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2023-12-02 17:50:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:50:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 12 [2023-12-02 17:50:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:14,943 INFO L225 Difference]: With dead ends: 124 [2023-12-02 17:50:14,944 INFO L226 Difference]: Without dead ends: 122 [2023-12-02 17:50:14,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:14,945 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:14,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-02 17:50:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 99. [2023-12-02 17:50:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-12-02 17:50:14,957 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 12 [2023-12-02 17:50:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:14,958 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-12-02 17:50:14,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2023-12-02 17:50:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-12-02 17:50:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 17:50:14,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:14,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 17:50:14,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:50:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:15,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:15,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2023-12-02 17:50:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794123610] [2023-12-02 17:50:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:15,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794123610] [2023-12-02 17:50:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794123610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677072390] [2023-12-02 17:50:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:15,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:15,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:15,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:50:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:15,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:50:15,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:15,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677072390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1457294536] [2023-12-02 17:50:15,295 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:15,295 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:15,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:15,295 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:15,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:15,505 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:15,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '976#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:15,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:15,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:15,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-02 17:50:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154732678] [2023-12-02 17:50:15,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:15,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:50:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:50:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:15,755 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:15,790 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-12-02 17:50:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:50:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2023-12-02 17:50:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:15,792 INFO L225 Difference]: With dead ends: 212 [2023-12-02 17:50:15,792 INFO L226 Difference]: Without dead ends: 211 [2023-12-02 17:50:15,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:50:15,794 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-02 17:50:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-12-02 17:50:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.2292682926829268) internal successors, (252), 208 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2023-12-02 17:50:15,811 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 14 [2023-12-02 17:50:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:15,811 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2023-12-02 17:50:15,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2023-12-02 17:50:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:50:15,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:15,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 17:50:15,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:50:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 17:50:16,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:16,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash 541767483, now seen corresponding path program 1 times [2023-12-02 17:50:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:16,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072922943] [2023-12-02 17:50:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072922943] [2023-12-02 17:50:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072922943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421468657] [2023-12-02 17:50:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:16,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:16,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:16,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:50:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:16,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:50:16,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421468657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:16,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077761583] [2023-12-02 17:50:16,188 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:16,188 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:16,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:16,188 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:16,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:16,269 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:16,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1560#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:16,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-02 17:50:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619825903] [2023-12-02 17:50:16,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:50:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:50:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:50:16,407 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:16,488 INFO L93 Difference]: Finished difference Result 410 states and 524 transitions. [2023-12-02 17:50:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:50:16,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 17:50:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:16,492 INFO L225 Difference]: With dead ends: 410 [2023-12-02 17:50:16,492 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 17:50:16,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:50:16,493 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:16,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 17:50:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 341. [2023-12-02 17:50:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.2640949554896141) internal successors, (426), 340 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 426 transitions. [2023-12-02 17:50:16,517 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 426 transitions. Word has length 17 [2023-12-02 17:50:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:16,517 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 426 transitions. [2023-12-02 17:50:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 426 transitions. [2023-12-02 17:50:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 17:50:16,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:16,520 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-12-02 17:50:16,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:50:16,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 17:50:16,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:16,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2023-12-02 17:50:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352611060] [2023-12-02 17:50:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352611060] [2023-12-02 17:50:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352611060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763710986] [2023-12-02 17:50:16,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:50:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:16,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:16,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:50:16,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 17:50:16,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:16,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:50:16,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763710986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:16,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691840164] [2023-12-02 17:50:16,981 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:16,981 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:16,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:16,982 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:16,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:17,100 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:17,345 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2599#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:17,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:17,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-02 17:50:17,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161906509] [2023-12-02 17:50:17,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:50:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:50:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:50:17,347 INFO L87 Difference]: Start difference. First operand 341 states and 426 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:17,473 INFO L93 Difference]: Finished difference Result 886 states and 1203 transitions. [2023-12-02 17:50:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:50:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2023-12-02 17:50:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:17,478 INFO L225 Difference]: With dead ends: 886 [2023-12-02 17:50:17,479 INFO L226 Difference]: Without dead ends: 884 [2023-12-02 17:50:17,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:50:17,480 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:17,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-02 17:50:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 581. [2023-12-02 17:50:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 577 states have (on average 1.2807625649913346) internal successors, (739), 580 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 739 transitions. [2023-12-02 17:50:17,513 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 739 transitions. Word has length 30 [2023-12-02 17:50:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:17,513 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 739 transitions. [2023-12-02 17:50:17,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 739 transitions. [2023-12-02 17:50:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:50:17,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:17,515 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-12-02 17:50:17,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:50:17,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 17:50:17,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2023-12-02 17:50:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85560376] [2023-12-02 17:50:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 17:50:17,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85560376] [2023-12-02 17:50:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85560376] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970790521] [2023-12-02 17:50:17,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:50:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:17,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:17,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:50:17,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 17:50:17,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:17,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:50:17,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 17:50:17,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 17:50:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970790521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1971959993] [2023-12-02 17:50:17,882 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:17,883 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:17,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:17,883 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:17,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:18,007 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:18,219 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4456#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:18,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:18,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:18,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-12-02 17:50:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859403645] [2023-12-02 17:50:18,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:50:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:50:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:50:18,221 INFO L87 Difference]: Start difference. First operand 581 states and 739 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-12-02 17:50:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:18,250 INFO L93 Difference]: Finished difference Result 581 states and 739 transitions. [2023-12-02 17:50:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:50:18,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 32 [2023-12-02 17:50:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:18,253 INFO L225 Difference]: With dead ends: 581 [2023-12-02 17:50:18,253 INFO L226 Difference]: Without dead ends: 580 [2023-12-02 17:50:18,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:50:18,254 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:18,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:50:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-02 17:50:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 454. [2023-12-02 17:50:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 451 states have (on average 1.188470066518847) internal successors, (536), 453 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 536 transitions. [2023-12-02 17:50:18,270 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 536 transitions. Word has length 32 [2023-12-02 17:50:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:18,271 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 536 transitions. [2023-12-02 17:50:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-12-02 17:50:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 536 transitions. [2023-12-02 17:50:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 17:50:18,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:18,272 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1] [2023-12-02 17:50:18,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:50:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:50:18,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:18,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 152586887, now seen corresponding path program 2 times [2023-12-02 17:50:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922508654] [2023-12-02 17:50:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:18,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:18,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922508654] [2023-12-02 17:50:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922508654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332914602] [2023-12-02 17:50:18,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:50:18,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:18,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:18,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:50:18,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 17:50:18,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:18,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:50:18,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:18,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332914602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1316006049] [2023-12-02 17:50:18,808 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:18,808 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:18,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:18,808 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:18,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:18,854 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:18,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5899#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:18,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:18,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:18,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-12-02 17:50:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944642276] [2023-12-02 17:50:18,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 17:50:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 17:50:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:50:19,000 INFO L87 Difference]: Start difference. First operand 454 states and 536 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 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) [2023-12-02 17:50:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:19,172 INFO L93 Difference]: Finished difference Result 1639 states and 2005 transitions. [2023-12-02 17:50:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:50:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 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 [2023-12-02 17:50:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:19,179 INFO L225 Difference]: With dead ends: 1639 [2023-12-02 17:50:19,179 INFO L226 Difference]: Without dead ends: 1638 [2023-12-02 17:50:19,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:50:19,181 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 77 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-12-02 17:50:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 904. [2023-12-02 17:50:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 901 states have (on average 1.1786903440621532) internal successors, (1062), 903 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2023-12-02 17:50:19,218 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 41 [2023-12-02 17:50:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:19,218 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2023-12-02 17:50:19,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 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) [2023-12-02 17:50:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2023-12-02 17:50:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 17:50:19,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:19,221 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-12-02 17:50:19,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:50:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 17:50:19,424 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:19,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2023-12-02 17:50:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106216748] [2023-12-02 17:50:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:19,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:19,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:19,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106216748] [2023-12-02 17:50:19,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106216748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:19,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657723398] [2023-12-02 17:50:19,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:50:19,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:19,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:19,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:50:19,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:50:19,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:19,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:50:19,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:19,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657723398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513380462] [2023-12-02 17:50:20,040 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:20,041 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:20,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:20,041 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:20,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:20,187 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:20,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9210#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:20,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:20,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-12-02 17:50:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214828093] [2023-12-02 17:50:20,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 17:50:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 17:50:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-12-02 17:50:20,400 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:20,721 INFO L93 Difference]: Finished difference Result 4211 states and 5265 transitions. [2023-12-02 17:50:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 17:50:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 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 66 [2023-12-02 17:50:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:20,738 INFO L225 Difference]: With dead ends: 4211 [2023-12-02 17:50:20,738 INFO L226 Difference]: Without dead ends: 4209 [2023-12-02 17:50:20,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2023-12-02 17:50:20,742 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 110 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:20,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 120 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:50:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2023-12-02 17:50:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 1938. [2023-12-02 17:50:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1935 states have (on average 1.15968992248062) internal successors, (2244), 1937 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2244 transitions. [2023-12-02 17:50:20,833 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2244 transitions. Word has length 66 [2023-12-02 17:50:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:20,833 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2244 transitions. [2023-12-02 17:50:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2244 transitions. [2023-12-02 17:50:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 17:50:20,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:20,835 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1] [2023-12-02 17:50:20,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:50:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:50:21,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:21,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1333197537, now seen corresponding path program 3 times [2023-12-02 17:50:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76368650] [2023-12-02 17:50:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:21,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76368650] [2023-12-02 17:50:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76368650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877208902] [2023-12-02 17:50:21,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:50:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:21,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:21,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:50:21,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:50:21,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:21,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 17:50:21,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:21,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:21,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877208902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [921168716] [2023-12-02 17:50:21,902 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:21,902 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:21,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:21,902 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:21,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:21,954 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:22,113 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16749#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:22,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:22,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-12-02 17:50:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632636915] [2023-12-02 17:50:22,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:22,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 17:50:22,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 17:50:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=961, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 17:50:22,117 INFO L87 Difference]: Start difference. First operand 1938 states and 2244 transitions. Second operand has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:22,781 INFO L93 Difference]: Finished difference Result 9801 states and 11675 transitions. [2023-12-02 17:50:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 17:50:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-02 17:50:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:22,815 INFO L225 Difference]: With dead ends: 9801 [2023-12-02 17:50:22,815 INFO L226 Difference]: Without dead ends: 9800 [2023-12-02 17:50:22,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=521, Invalid=961, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 17:50:22,822 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 192 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:22,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 157 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:50:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2023-12-02 17:50:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 3736. [2023-12-02 17:50:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3733 states have (on average 1.1534958478435575) internal successors, (4306), 3735 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4306 transitions. [2023-12-02 17:50:23,109 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4306 transitions. Word has length 89 [2023-12-02 17:50:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:23,109 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 4306 transitions. [2023-12-02 17:50:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:23,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4306 transitions. [2023-12-02 17:50:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 17:50:23,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:23,114 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-12-02 17:50:23,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 17:50:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 17:50:23,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:23,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2023-12-02 17:50:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947292796] [2023-12-02 17:50:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:24,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947292796] [2023-12-02 17:50:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947292796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472399977] [2023-12-02 17:50:24,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 17:50:24,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:24,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:24,005 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:24,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:50:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:24,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 17:50:24,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:24,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:24,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472399977] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1457337487] [2023-12-02 17:50:24,883 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:24,883 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:24,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:24,883 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:24,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:25,009 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:25,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32948#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:25,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:25,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-12-02 17:50:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463749706] [2023-12-02 17:50:25,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 17:50:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 17:50:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 17:50:25,287 INFO L87 Difference]: Start difference. First operand 3736 states and 4306 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:26,579 INFO L93 Difference]: Finished difference Result 26503 states and 31969 transitions. [2023-12-02 17:50:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 17:50:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 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 138 [2023-12-02 17:50:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:26,640 INFO L225 Difference]: With dead ends: 26503 [2023-12-02 17:50:26,640 INFO L226 Difference]: Without dead ends: 26501 [2023-12-02 17:50:26,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 17:50:26,656 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 266 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:26,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 240 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:50:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26501 states. [2023-12-02 17:50:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26501 to 7978. [2023-12-02 17:50:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7978 states, 7975 states have (on average 1.1430721003134796) internal successors, (9116), 7977 states have internal predecessors, (9116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 9116 transitions. [2023-12-02 17:50:27,370 INFO L78 Accepts]: Start accepts. Automaton has 7978 states and 9116 transitions. Word has length 138 [2023-12-02 17:50:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:27,370 INFO L495 AbstractCegarLoop]: Abstraction has 7978 states and 9116 transitions. [2023-12-02 17:50:27,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7978 states and 9116 transitions. [2023-12-02 17:50:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-02 17:50:27,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:27,378 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1] [2023-12-02 17:50:27,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:50:27,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:27,578 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:27,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1133562447, now seen corresponding path program 4 times [2023-12-02 17:50:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674111364] [2023-12-02 17:50:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:28,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674111364] [2023-12-02 17:50:28,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674111364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069321462] [2023-12-02 17:50:28,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 17:50:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:28,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:28,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:50:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:28,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 17:50:28,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:28,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:30,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069321462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [712309385] [2023-12-02 17:50:30,128 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:30,128 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:30,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:30,129 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:30,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:30,163 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:30,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73089#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:30,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:30,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:30,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-12-02 17:50:30,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673010824] [2023-12-02 17:50:30,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:30,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-02 17:50:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-02 17:50:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2041, Invalid=2929, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 17:50:30,358 INFO L87 Difference]: Start difference. First operand 7978 states and 9116 transitions. Second operand has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:33,668 INFO L93 Difference]: Finished difference Result 64837 states and 75523 transitions. [2023-12-02 17:50:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-02 17:50:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-02 17:50:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:33,733 INFO L225 Difference]: With dead ends: 64837 [2023-12-02 17:50:33,733 INFO L226 Difference]: Without dead ends: 64836 [2023-12-02 17:50:33,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2041, Invalid=2929, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 17:50:33,754 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 538 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:33,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 317 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:50:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64836 states. [2023-12-02 17:50:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64836 to 15160. [2023-12-02 17:50:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15160 states, 15157 states have (on average 1.139671438939104) internal successors, (17274), 15159 states have internal predecessors, (17274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15160 states to 15160 states and 17274 transitions. [2023-12-02 17:50:35,133 INFO L78 Accepts]: Start accepts. Automaton has 15160 states and 17274 transitions. Word has length 185 [2023-12-02 17:50:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:35,133 INFO L495 AbstractCegarLoop]: Abstraction has 15160 states and 17274 transitions. [2023-12-02 17:50:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 15160 states and 17274 transitions. [2023-12-02 17:50:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-02 17:50:35,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:35,144 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 1, 1, 1] [2023-12-02 17:50:35,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:50:35,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:35,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:35,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1542423360, now seen corresponding path program 5 times [2023-12-02 17:50:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908298620] [2023-12-02 17:50:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:37,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908298620] [2023-12-02 17:50:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908298620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125239308] [2023-12-02 17:50:37,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:50:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:37,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:37,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:50:37,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2023-12-02 17:50:37,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:37,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:50:37,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:37,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125239308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519183453] [2023-12-02 17:50:40,120 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:50:40,120 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:40,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:40,120 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:40,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:50:40,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:50:40,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '165188#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:50:40,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:50:40,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:40,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-12-02 17:50:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038534269] [2023-12-02 17:50:40,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:50:40,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-02 17:50:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-02 17:50:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4587, Invalid=5919, Unknown=0, NotChecked=0, Total=10506 [2023-12-02 17:50:40,575 INFO L87 Difference]: Start difference. First operand 15160 states and 17274 transitions. Second operand has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:50,100 INFO L93 Difference]: Finished difference Result 182623 states and 214113 transitions. [2023-12-02 17:50:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-02 17:50:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 0 states have call successors, (0), 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 282 [2023-12-02 17:50:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:50,307 INFO L225 Difference]: With dead ends: 182623 [2023-12-02 17:50:50,307 INFO L226 Difference]: Without dead ends: 182621 [2023-12-02 17:50:50,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4587, Invalid=5919, Unknown=0, NotChecked=0, Total=10506 [2023-12-02 17:50:50,333 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1016 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:50,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 480 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 17:50:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182621 states. [2023-12-02 17:50:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182621 to 32346. [2023-12-02 17:50:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32346 states, 32343 states have (on average 1.134217605045914) internal successors, (36684), 32345 states have internal predecessors, (36684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32346 states to 32346 states and 36684 transitions. [2023-12-02 17:50:54,234 INFO L78 Accepts]: Start accepts. Automaton has 32346 states and 36684 transitions. Word has length 282 [2023-12-02 17:50:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:54,235 INFO L495 AbstractCegarLoop]: Abstraction has 32346 states and 36684 transitions. [2023-12-02 17:50:54,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 32346 states and 36684 transitions. [2023-12-02 17:50:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-02 17:50:54,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:54,249 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1, 1] [2023-12-02 17:50:54,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:50:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:54,450 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:50:54,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1061579601, now seen corresponding path program 5 times [2023-12-02 17:50:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:54,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282508737] [2023-12-02 17:50:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:54,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:57,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282508737] [2023-12-02 17:50:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282508737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868458031] [2023-12-02 17:50:57,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:50:57,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:57,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:57,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:50:57,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2023-12-02 17:50:57,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:50:57,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 17:50:57,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:58,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:51:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:51:02,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868458031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:51:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [153817182] [2023-12-02 17:51:02,524 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:51:02,525 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:51:02,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:51:02,525 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:51:02,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:51:02,561 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:51:02,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '410021#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:51:02,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:51:02,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:51:02,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2023-12-02 17:51:02,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948366857] [2023-12-02 17:51:02,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:51:02,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-02 17:51:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:51:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-02 17:51:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8153, Invalid=9937, Unknown=0, NotChecked=0, Total=18090 [2023-12-02 17:51:02,854 INFO L87 Difference]: Start difference. First operand 32346 states and 36684 transitions. Second operand has 128 states, 127 states have (on average 5.929133858267717) internal successors, (753), 128 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:51:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:51:31,870 INFO L93 Difference]: Finished difference Result 464157 states and 532451 transitions. [2023-12-02 17:51:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-02 17:51:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.929133858267717) internal successors, (753), 128 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2023-12-02 17:51:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:51:32,553 INFO L225 Difference]: With dead ends: 464157 [2023-12-02 17:51:32,553 INFO L226 Difference]: Without dead ends: 464156 [2023-12-02 17:51:32,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8153, Invalid=9937, Unknown=0, NotChecked=0, Total=18090 [2023-12-02 17:51:32,613 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1664 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1811 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:51:32,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 637 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1811 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:51:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464156 states. [2023-12-02 17:51:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464156 to 61048. [2023-12-02 17:51:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61045 states have (on average 1.1324432795478745) internal successors, (69130), 61047 states have internal predecessors, (69130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:51:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 69130 transitions. [2023-12-02 17:51:43,672 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 69130 transitions. Word has length 377 [2023-12-02 17:51:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:51:43,673 INFO L495 AbstractCegarLoop]: Abstraction has 61048 states and 69130 transitions. [2023-12-02 17:51:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.929133858267717) internal successors, (753), 128 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:51:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 69130 transitions. [2023-12-02 17:51:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-02 17:51:43,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:51:43,722 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 1, 1, 1] [2023-12-02 17:51:43,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:51:43,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:51:43,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:51:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:51:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1382136688, now seen corresponding path program 6 times [2023-12-02 17:51:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:51:43,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217439219] [2023-12-02 17:51:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:51:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:51:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:51:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:51:49,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:51:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217439219] [2023-12-02 17:51:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217439219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:51:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499417595] [2023-12-02 17:51:49,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:51:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:51:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:51:49,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:51:49,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:51:50,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:51:50,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:51:50,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-02 17:51:50,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:51:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:51:50,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:51:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:51:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499417595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:51:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2106847677] [2023-12-02 17:51:59,570 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:51:59,570 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:51:59,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:51:59,570 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:51:59,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:51:59,662 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:52:00,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1005616#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:52:00,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:52:00,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:52:00,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-12-02 17:52:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290577102] [2023-12-02 17:52:00,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:52:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-02 17:52:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-02 17:52:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18363, Invalid=21039, Unknown=0, NotChecked=0, Total=39402 [2023-12-02 17:52:00,204 INFO L87 Difference]: Start difference. First operand 61048 states and 69130 transitions. Second operand has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:53:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:47,863 INFO L93 Difference]: Finished difference Result 1342415 states and 1544929 transitions. [2023-12-02 17:53:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-02 17:53:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 0 states have call successors, (0), 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 570 [2023-12-02 17:53:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:49,799 INFO L225 Difference]: With dead ends: 1342415 [2023-12-02 17:53:49,799 INFO L226 Difference]: Without dead ends: 1342413 [2023-12-02 17:53:50,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=18363, Invalid=21039, Unknown=0, NotChecked=0, Total=39402 [2023-12-02 17:53:50,015 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1877 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:50,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 960 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 17:53:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342413 states. [2023-12-02 17:54:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342413 to 130234. [2023-12-02 17:54:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130234 states, 130231 states have (on average 1.1296542297916778) internal successors, (147116), 130233 states have internal predecessors, (147116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:54:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130234 states to 130234 states and 147116 transitions. [2023-12-02 17:54:33,063 INFO L78 Accepts]: Start accepts. Automaton has 130234 states and 147116 transitions. Word has length 570 [2023-12-02 17:54:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:33,064 INFO L495 AbstractCegarLoop]: Abstraction has 130234 states and 147116 transitions. [2023-12-02 17:54:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:54:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 130234 states and 147116 transitions. [2023-12-02 17:54:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-12-02 17:54:33,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:33,250 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 126, 126, 126, 126, 1, 1, 1] [2023-12-02 17:54:33,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 17:54:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:54:33,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:54:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1265641839, now seen corresponding path program 6 times [2023-12-02 17:54:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273467080] [2023-12-02 17:54:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:45,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273467080] [2023-12-02 17:54:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273467080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354321903] [2023-12-02 17:54:45,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:54:45,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:45,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:45,994 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:45,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca7645e-8162-41dd-b5c6-7383382ba1e9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:54:46,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:54:46,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:54:46,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-02 17:54:46,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:47,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:55:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:55:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354321903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:55:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [909680634] [2023-12-02 17:55:05,124 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 17:55:05,124 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:55:05,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:55:05,124 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:55:05,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:55:05,163 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:55:05,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2669369#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0) (<= 2 |ULTIMATE.start_main_~max~0#1|))' at error location [2023-12-02 17:55:05,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:55:05,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:55:05,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2023-12-02 17:55:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920809995] [2023-12-02 17:55:05,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:55:05,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2023-12-02 17:55:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:55:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2023-12-02 17:55:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32665, Invalid=36241, Unknown=0, NotChecked=0, Total=68906 [2023-12-02 17:55:05,685 INFO L87 Difference]: Start difference. First operand 130234 states and 147116 transitions. Second operand has 256 states, 255 states have (on average 5.964705882352941) internal successors, (1521), 256 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:00:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:54,390 INFO L93 Difference]: Finished difference Result 3494989 states and 3972835 transitions. [2023-12-02 18:00:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2023-12-02 18:00:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 5.964705882352941) internal successors, (1521), 256 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 761 [2023-12-02 18:00:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:59,516 INFO L225 Difference]: With dead ends: 3494989 [2023-12-02 18:00:59,516 INFO L226 Difference]: Without dead ends: 3494988 [2023-12-02 18:01:00,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2409 GetRequests, 2148 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=32665, Invalid=36241, Unknown=0, NotChecked=0, Total=68906 [2023-12-02 18:01:00,671 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3274 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 4118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4118 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:00,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 1277 Invalid, 5148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4118 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 18:01:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494988 states.