./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/max40-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max40-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:10:19,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:10:19,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:10:19,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:10:19,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:10:19,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:10:19,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:10:19,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:10:19,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:10:19,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:10:19,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:10:19,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:10:19,573 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:10:19,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:10:19,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:10:19,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:10:19,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:10:19,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:10:19,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:10:19,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:10:19,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:10:19,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:10:19,581 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:10:19,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:10:19,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:10:19,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:10:19,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:10:19,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:10:19,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:10:19,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:10:19,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:19,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:10:19,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:10:19,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:10:19,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:10:19,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:10:19,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:10:19,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:10:19,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:10:19,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:10:19,591 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:10:19,592 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 [2023-11-06 23:10:19,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:10:20,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:10:20,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:10:20,042 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:10:20,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:10:20,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/reducercommutativity/max40-1.i [2023-11-06 23:10:23,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:10:23,488 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:10:23,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/sv-benchmarks/c/reducercommutativity/max40-1.i [2023-11-06 23:10:23,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/data/b26d48f07/6bb404b85ad749e8b746902be91a0fdf/FLAG00c534121 [2023-11-06 23:10:23,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/data/b26d48f07/6bb404b85ad749e8b746902be91a0fdf [2023-11-06 23:10:23,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:10:23,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:10:23,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:23,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:10:23,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:10:23,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:23,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21285dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23, skipping insertion in model container [2023-11-06 23:10:23,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:23,589 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:10:23,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:23,889 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:10:23,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:23,940 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:10:23,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23 WrapperNode [2023-11-06 23:10:23,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:23,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:23,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:10:23,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:10:23,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:23,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:23,989 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-06 23:10:23,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:23,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:10:23,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:10:23,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:10:24,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:10:24,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:10:24,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:10:24,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:10:24,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (1/1) ... [2023-11-06 23:10:24,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:24,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:10:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:10:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:10:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure max [2023-11-06 23:10:24,117 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2023-11-06 23:10:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:10:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:10:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:10:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:10:24,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:10:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:10:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:10:24,211 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:10:24,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:10:24,499 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:10:24,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:10:24,508 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:10:24,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:24 BoogieIcfgContainer [2023-11-06 23:10:24,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:10:24,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:10:24,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:10:24,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:10:24,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:10:23" (1/3) ... [2023-11-06 23:10:24,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:24, skipping insertion in model container [2023-11-06 23:10:24,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:23" (2/3) ... [2023-11-06 23:10:24,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:24, skipping insertion in model container [2023-11-06 23:10:24,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:24" (3/3) ... [2023-11-06 23:10:24,523 INFO L112 eAbstractionObserver]: Analyzing ICFG max40-1.i [2023-11-06 23:10:24,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:10:24,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 23:10:24,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:10:24,660 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@79ec6046, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:10:24,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 23:10:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 32 states have (on average 1.53125) internal successors, (49), 40 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 23:10:24,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:24,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:10:24,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:24,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 54464963, now seen corresponding path program 1 times [2023-11-06 23:10:24,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952157856] [2023-11-06 23:10:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952157856] [2023-11-06 23:10:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952157856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511660990] [2023-11-06 23:10:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:24,987 INFO L87 Difference]: Start difference. First operand has 45 states, 32 states have (on average 1.53125) internal successors, (49), 40 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:25,097 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2023-11-06 23:10:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 23:10:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:25,108 INFO L225 Difference]: With dead ends: 87 [2023-11-06 23:10:25,109 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 23:10:25,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:25,117 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:25,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 128 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 23:10:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-06 23:10:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-11-06 23:10:25,159 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 5 [2023-11-06 23:10:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:25,160 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-11-06 23:10:25,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-11-06 23:10:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 23:10:25,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:25,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:10:25,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:10:25,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:25,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1177332607, now seen corresponding path program 1 times [2023-11-06 23:10:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224447633] [2023-11-06 23:10:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224447633] [2023-11-06 23:10:25,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224447633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772549268] [2023-11-06 23:10:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:25,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:25,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:25,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:10:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:25,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:10:25,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:25,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:25,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772549268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:25,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:25,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-06 23:10:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84820873] [2023-11-06 23:10:25,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:25,549 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:25,604 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-11-06 23:10:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 23:10:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:25,606 INFO L225 Difference]: With dead ends: 41 [2023-11-06 23:10:25,607 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 23:10:25,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:10:25,609 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 169 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 23:10:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-06 23:10:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-06 23:10:25,619 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 9 [2023-11-06 23:10:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:25,619 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-06 23:10:25,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-06 23:10:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 23:10:25,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:25,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-06 23:10:25,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:10:25,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 23:10:25,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:25,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2137572522, now seen corresponding path program 1 times [2023-11-06 23:10:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772231240] [2023-11-06 23:10:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:10:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772231240] [2023-11-06 23:10:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772231240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:25,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148031020] [2023-11-06 23:10:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:25,958 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:26,007 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-11-06 23:10:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 23:10:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:26,011 INFO L225 Difference]: With dead ends: 40 [2023-11-06 23:10:26,012 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 23:10:26,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:26,015 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:26,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 104 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 23:10:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-11-06 23:10:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-06 23:10:26,034 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 10 [2023-11-06 23:10:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:26,035 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-06 23:10:26,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-06 23:10:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 23:10:26,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:26,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:10:26,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:26,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash 127439927, now seen corresponding path program 1 times [2023-11-06 23:10:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:26,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382192781] [2023-11-06 23:10:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382192781] [2023-11-06 23:10:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382192781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851144816] [2023-11-06 23:10:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:26,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:26,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:26,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:10:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:26,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:26,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:26,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851144816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:26,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:26,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 23:10:26,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471301569] [2023-11-06 23:10:26,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:10:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:10:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:10:26,411 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:26,505 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2023-11-06 23:10:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:10:26,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 23:10:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:26,508 INFO L225 Difference]: With dead ends: 73 [2023-11-06 23:10:26,508 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 23:10:26,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:10:26,510 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:26,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 175 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 23:10:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 23:10:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-06 23:10:26,520 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 15 [2023-11-06 23:10:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:26,520 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-06 23:10:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-06 23:10:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 23:10:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:26,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:26,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-06 23:10:26,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:26,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1931603025, now seen corresponding path program 2 times [2023-11-06 23:10:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984144186] [2023-11-06 23:10:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 23:10:26,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984144186] [2023-11-06 23:10:26,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984144186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:26,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:26,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328495398] [2023-11-06 23:10:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:26,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:26,905 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:26,958 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2023-11-06 23:10:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:26,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-06 23:10:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:26,969 INFO L225 Difference]: With dead ends: 77 [2023-11-06 23:10:26,969 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 23:10:26,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:26,971 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:26,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 102 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 23:10:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 23:10:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.275) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-06 23:10:26,981 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 23 [2023-11-06 23:10:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:26,981 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-06 23:10:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-06 23:10:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 23:10:26,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:26,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:26,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:10:26,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:26,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2024256696, now seen corresponding path program 1 times [2023-11-06 23:10:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963895390] [2023-11-06 23:10:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963895390] [2023-11-06 23:10:27,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963895390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703723768] [2023-11-06 23:10:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:27,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:27,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:27,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:10:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:27,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:10:27,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:27,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703723768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:27,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:27,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-06 23:10:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247711222] [2023-11-06 23:10:27,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:27,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:10:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:10:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:10:27,636 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:27,834 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2023-11-06 23:10:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:10:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-06 23:10:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:27,840 INFO L225 Difference]: With dead ends: 101 [2023-11-06 23:10:27,840 INFO L226 Difference]: Without dead ends: 66 [2023-11-06 23:10:27,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:10:27,849 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 32 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:27,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 208 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:10:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-06 23:10:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-06 23:10:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 62 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2023-11-06 23:10:27,878 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 29 [2023-11-06 23:10:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:27,879 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2023-11-06 23:10:27,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2023-11-06 23:10:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:27,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:27,881 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:27,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:28,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:10:28,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:28,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1580822072, now seen corresponding path program 2 times [2023-11-06 23:10:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:28,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581511375] [2023-11-06 23:10:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581511375] [2023-11-06 23:10:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581511375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603673681] [2023-11-06 23:10:28,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:10:28,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:28,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:10:28,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:10:28,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:10:28,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:10:28,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:28,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:29,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603673681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:29,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-11-06 23:10:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214834209] [2023-11-06 23:10:29,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 23:10:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 23:10:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 23:10:29,256 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:29,668 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2023-11-06 23:10:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 23:10:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-06 23:10:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:29,672 INFO L225 Difference]: With dead ends: 133 [2023-11-06 23:10:29,672 INFO L226 Difference]: Without dead ends: 98 [2023-11-06 23:10:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 23:10:29,675 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 82 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:29,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 274 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:10:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-06 23:10:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-06 23:10:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 88 states have (on average 1.125) internal successors, (99), 94 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2023-11-06 23:10:29,703 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 45 [2023-11-06 23:10:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:29,704 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2023-11-06 23:10:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2023-11-06 23:10:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 23:10:29,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:29,715 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:29,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:29,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:29,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:29,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash 904926232, now seen corresponding path program 3 times [2023-11-06 23:10:29,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:29,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471315311] [2023-11-06 23:10:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:29,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:10:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471315311] [2023-11-06 23:10:31,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471315311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466590015] [2023-11-06 23:10:31,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:10:31,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:31,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:31,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:31,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:10:31,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 23:10:31,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:10:31,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:31,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-06 23:10:31,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466590015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:31,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:31,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [33] total 36 [2023-11-06 23:10:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345273138] [2023-11-06 23:10:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:31,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:10:31,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:10:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2023-11-06 23:10:31,261 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:31,310 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2023-11-06 23:10:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-06 23:10:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:31,316 INFO L225 Difference]: With dead ends: 98 [2023-11-06 23:10:31,317 INFO L226 Difference]: Without dead ends: 97 [2023-11-06 23:10:31,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 23:10:31,320 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:31,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-06 23:10:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-06 23:10:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 93 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2023-11-06 23:10:31,348 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 77 [2023-11-06 23:10:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:31,350 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2023-11-06 23:10:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2023-11-06 23:10:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 23:10:31,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:31,353 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:31,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:31,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:31,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:31,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2012057829, now seen corresponding path program 1 times [2023-11-06 23:10:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:31,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306177447] [2023-11-06 23:10:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:31,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-06 23:10:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306177447] [2023-11-06 23:10:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306177447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:31,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008360612] [2023-11-06 23:10:31,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:31,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:31,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:31,679 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:31,700 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2023-11-06 23:10:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-06 23:10:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:31,702 INFO L225 Difference]: With dead ends: 97 [2023-11-06 23:10:31,702 INFO L226 Difference]: Without dead ends: 94 [2023-11-06 23:10:31,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:31,704 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:31,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 95 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-06 23:10:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2023-11-06 23:10:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 85 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2023-11-06 23:10:31,712 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 78 [2023-11-06 23:10:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2023-11-06 23:10:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2023-11-06 23:10:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 23:10:31,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:31,714 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:10:31,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:31,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash 818560494, now seen corresponding path program 1 times [2023-11-06 23:10:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:31,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458749535] [2023-11-06 23:10:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:10:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 23:10:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-06 23:10:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458749535] [2023-11-06 23:10:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458749535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778905357] [2023-11-06 23:10:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:31,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:31,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:31,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:10:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:32,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:10:32,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-06 23:10:32,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778905357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:32,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:32,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 23:10:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698018472] [2023-11-06 23:10:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:32,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:32,145 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:32,174 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2023-11-06 23:10:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-11-06 23:10:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:32,176 INFO L225 Difference]: With dead ends: 98 [2023-11-06 23:10:32,176 INFO L226 Difference]: Without dead ends: 97 [2023-11-06 23:10:32,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:32,177 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-06 23:10:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2023-11-06 23:10:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 87 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2023-11-06 23:10:32,185 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 92 [2023-11-06 23:10:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:32,187 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2023-11-06 23:10:32,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2023-11-06 23:10:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 23:10:32,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:32,189 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:32,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:32,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:32,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash -394428369, now seen corresponding path program 1 times [2023-11-06 23:10:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:32,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109949878] [2023-11-06 23:10:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:10:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 23:10:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-06 23:10:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109949878] [2023-11-06 23:10:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109949878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121391854] [2023-11-06 23:10:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:32,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:32,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:10:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:32,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:10:32,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-06 23:10:32,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121391854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:32,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 23:10:32,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376429947] [2023-11-06 23:10:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:32,802 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:32,822 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2023-11-06 23:10:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2023-11-06 23:10:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:32,824 INFO L225 Difference]: With dead ends: 98 [2023-11-06 23:10:32,824 INFO L226 Difference]: Without dead ends: 97 [2023-11-06 23:10:32,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:32,826 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-06 23:10:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-11-06 23:10:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.0823529411764705) internal successors, (92), 88 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2023-11-06 23:10:32,834 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 93 [2023-11-06 23:10:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:32,836 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2023-11-06 23:10:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2023-11-06 23:10:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 23:10:32,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:32,840 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:32,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:10:33,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:33,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:33,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1088537519, now seen corresponding path program 1 times [2023-11-06 23:10:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565705333] [2023-11-06 23:10:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:33,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:10:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 23:10:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-06 23:10:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565705333] [2023-11-06 23:10:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565705333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639890249] [2023-11-06 23:10:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:33,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:10:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 23:10:33,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 23:10:34,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 23:10:35,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639890249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:35,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 33, 33] total 67 [2023-11-06 23:10:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642208268] [2023-11-06 23:10:35,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:35,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-06 23:10:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:35,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-06 23:10:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1063, Invalid=3359, Unknown=0, NotChecked=0, Total=4422 [2023-11-06 23:10:35,548 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 67 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 67 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:36,794 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2023-11-06 23:10:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-06 23:10:36,795 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 67 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 95 [2023-11-06 23:10:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:36,796 INFO L225 Difference]: With dead ends: 196 [2023-11-06 23:10:36,797 INFO L226 Difference]: Without dead ends: 167 [2023-11-06 23:10:36,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2539, Invalid=6967, Unknown=0, NotChecked=0, Total=9506 [2023-11-06 23:10:36,804 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 215 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:36,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 318 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:10:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-06 23:10:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2023-11-06 23:10:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 155 states have (on average 1.0516129032258064) internal successors, (163), 158 states have internal predecessors, (163), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 167 transitions. [2023-11-06 23:10:36,814 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 167 transitions. Word has length 95 [2023-11-06 23:10:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:36,814 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 167 transitions. [2023-11-06 23:10:36,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.5074626865671643) internal successors, (168), 67 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 167 transitions. [2023-11-06 23:10:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-06 23:10:36,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:36,817 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:36,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:10:37,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:37,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash 850272945, now seen corresponding path program 2 times [2023-11-06 23:10:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850793104] [2023-11-06 23:10:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:37,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 23:10:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 23:10:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2023-11-06 23:10:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:37,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850793104] [2023-11-06 23:10:37,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850793104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375626617] [2023-11-06 23:10:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:37,331 INFO L87 Difference]: Start difference. First operand 162 states and 167 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:37,377 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2023-11-06 23:10:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2023-11-06 23:10:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:37,380 INFO L225 Difference]: With dead ends: 167 [2023-11-06 23:10:37,380 INFO L226 Difference]: Without dead ends: 165 [2023-11-06 23:10:37,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:37,382 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:37,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-06 23:10:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-11-06 23:10:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 158 states have (on average 1.0506329113924051) internal successors, (166), 161 states have internal predecessors, (166), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2023-11-06 23:10:37,393 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 171 [2023-11-06 23:10:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:37,396 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2023-11-06 23:10:37,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2023-11-06 23:10:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-06 23:10:37,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:37,400 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:10:37,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:37,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1235709324, now seen corresponding path program 1 times [2023-11-06 23:10:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432063210] [2023-11-06 23:10:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 23:10:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 23:10:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2023-11-06 23:10:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432063210] [2023-11-06 23:10:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432063210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691106293] [2023-11-06 23:10:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:37,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:37,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:10:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-06 23:10:37,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-06 23:10:40,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-06 23:10:43,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691106293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:43,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:43,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 65, 65] total 84 [2023-11-06 23:10:43,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469364587] [2023-11-06 23:10:43,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:43,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-11-06 23:10:43,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-11-06 23:10:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1686, Invalid=5286, Unknown=0, NotChecked=0, Total=6972 [2023-11-06 23:10:43,400 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 84 states have internal predecessors, (208), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 23:10:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:45,473 INFO L93 Difference]: Finished difference Result 247 states and 267 transitions. [2023-11-06 23:10:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-06 23:10:45,474 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 84 states have internal predecessors, (208), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 174 [2023-11-06 23:10:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:45,476 INFO L225 Difference]: With dead ends: 247 [2023-11-06 23:10:45,476 INFO L226 Difference]: Without dead ends: 209 [2023-11-06 23:10:45,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 225 SyntacticMatches, 47 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4108, Invalid=11144, Unknown=0, NotChecked=0, Total=15252 [2023-11-06 23:10:45,482 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 232 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:45,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 356 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:10:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-06 23:10:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2023-11-06 23:10:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 196 states have (on average 1.0408163265306123) internal successors, (204), 199 states have internal predecessors, (204), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 208 transitions. [2023-11-06 23:10:45,491 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 208 transitions. Word has length 174 [2023-11-06 23:10:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:45,491 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 208 transitions. [2023-11-06 23:10:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 84 states have internal predecessors, (208), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 23:10:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 208 transitions. [2023-11-06 23:10:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-06 23:10:45,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:45,495 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:45,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:10:45,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:45,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash 823814405, now seen corresponding path program 1 times [2023-11-06 23:10:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381213597] [2023-11-06 23:10:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 23:10:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-06 23:10:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3210 trivial. 0 not checked. [2023-11-06 23:10:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381213597] [2023-11-06 23:10:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381213597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:46,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:46,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:46,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225508000] [2023-11-06 23:10:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:46,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:46,002 INFO L87 Difference]: Start difference. First operand 203 states and 208 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:46,041 INFO L93 Difference]: Finished difference Result 203 states and 208 transitions. [2023-11-06 23:10:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 211 [2023-11-06 23:10:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:46,044 INFO L225 Difference]: With dead ends: 203 [2023-11-06 23:10:46,045 INFO L226 Difference]: Without dead ends: 202 [2023-11-06 23:10:46,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:46,046 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 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 [2023-11-06 23:10:46,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-06 23:10:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-11-06 23:10:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0357142857142858) internal successors, (203), 198 states have internal predecessors, (203), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 207 transitions. [2023-11-06 23:10:46,071 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 207 transitions. Word has length 211 [2023-11-06 23:10:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:46,072 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 207 transitions. [2023-11-06 23:10:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 207 transitions. [2023-11-06 23:10:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 23:10:46,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:46,076 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:46,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:10:46,076 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:46,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1411663783, now seen corresponding path program 1 times [2023-11-06 23:10:46,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:46,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310546310] [2023-11-06 23:10:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 23:10:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-06 23:10:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3214 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3211 trivial. 0 not checked. [2023-11-06 23:10:46,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310546310] [2023-11-06 23:10:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310546310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:46,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:46,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:46,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014789045] [2023-11-06 23:10:46,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:46,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:46,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:46,410 INFO L87 Difference]: Start difference. First operand 202 states and 207 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:46,439 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2023-11-06 23:10:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 213 [2023-11-06 23:10:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:46,442 INFO L225 Difference]: With dead ends: 202 [2023-11-06 23:10:46,442 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 23:10:46,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:46,444 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:46,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 23:10:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-11-06 23:10:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 194 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 203 transitions. [2023-11-06 23:10:46,456 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 203 transitions. Word has length 213 [2023-11-06 23:10:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:46,457 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 203 transitions. [2023-11-06 23:10:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 203 transitions. [2023-11-06 23:10:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-06 23:10:46,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:46,461 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:10:46,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-06 23:10:46,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 811904412, now seen corresponding path program 1 times [2023-11-06 23:10:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343335014] [2023-11-06 23:10:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 23:10:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-06 23:10:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3210 trivial. 0 not checked. [2023-11-06 23:10:46,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:46,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343335014] [2023-11-06 23:10:46,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343335014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:46,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:46,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:10:46,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746147036] [2023-11-06 23:10:46,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:46,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:46,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:46,735 INFO L87 Difference]: Start difference. First operand 198 states and 203 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:46,760 INFO L93 Difference]: Finished difference Result 198 states and 203 transitions. [2023-11-06 23:10:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:46,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 214 [2023-11-06 23:10:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:46,762 INFO L225 Difference]: With dead ends: 198 [2023-11-06 23:10:46,762 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 23:10:46,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:46,764 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:46,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 23:10:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 23:10:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 23:10:46,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2023-11-06 23:10:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:46,766 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:10:46,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:10:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 23:10:46,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 23:10:46,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-06 23:10:46,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-11-06 23:10:46,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-11-06 23:10:46,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-06 23:10:46,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-06 23:10:46,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-06 23:10:46,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-06 23:10:46,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-06 23:10:46,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:10:46,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 23:10:46,893 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-06 23:10:46,893 INFO L899 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2023-11-06 23:10:46,893 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 24) the Hoare annotation is: true [2023-11-06 23:10:46,894 INFO L899 garLoopResultBuilder]: For program point maxFINAL(lines 15 24) no Hoare annotation was computed. [2023-11-06 23:10:46,894 INFO L899 garLoopResultBuilder]: For program point maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-06 23:10:46,894 INFO L899 garLoopResultBuilder]: For program point maxEXIT(lines 15 24) no Hoare annotation was computed. [2023-11-06 23:10:46,894 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2023-11-06 23:10:46,894 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-11-06 23:10:46,895 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2023-11-06 23:10:46,895 INFO L895 garLoopResultBuilder]: At program point L20-5(lines 20 22) the Hoare annotation is: (< 0 (+ 2147483649 max_~i~0)) [2023-11-06 23:10:46,895 INFO L899 garLoopResultBuilder]: For program point L20-6(lines 20 22) no Hoare annotation was computed. [2023-11-06 23:10:46,896 INFO L899 garLoopResultBuilder]: For program point maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-06 23:10:46,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-06 23:10:46,896 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-06 23:10:46,897 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-11-06 23:10:46,897 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 53) the Hoare annotation is: true [2023-11-06 23:10:46,897 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 23:10:46,897 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-06 23:10:46,898 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-06 23:10:46,898 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 23:10:46,898 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2023-11-06 23:10:46,898 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 49 51) no Hoare annotation was computed. [2023-11-06 23:10:46,898 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-06 23:10:46,899 INFO L899 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2023-11-06 23:10:46,899 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2023-11-06 23:10:46,899 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-11-06 23:10:46,899 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-06 23:10:46,900 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 23:10:46,900 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-06 23:10:46,900 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 23:10:46,900 INFO L902 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2023-11-06 23:10:46,901 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-11-06 23:10:46,901 INFO L899 garLoopResultBuilder]: For program point L34-2(lines 34 36) no Hoare annotation was computed. [2023-11-06 23:10:46,901 INFO L899 garLoopResultBuilder]: For program point L34-3(line 34) no Hoare annotation was computed. [2023-11-06 23:10:46,901 INFO L899 garLoopResultBuilder]: For program point L34-4(line 34) no Hoare annotation was computed. [2023-11-06 23:10:46,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-06 23:10:46,902 INFO L895 garLoopResultBuilder]: At program point L34-5(lines 34 36) the Hoare annotation is: (or (= |ULTIMATE.start_main_~i~1#1| 0) (< 0 |ULTIMATE.start_main_~i~1#1|)) [2023-11-06 23:10:46,903 INFO L899 garLoopResultBuilder]: For program point L34-6(lines 34 36) no Hoare annotation was computed. [2023-11-06 23:10:46,903 INFO L902 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: true [2023-11-06 23:10:46,903 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2023-11-06 23:10:46,903 INFO L899 garLoopResultBuilder]: For program point L43-2(lines 43 45) no Hoare annotation was computed. [2023-11-06 23:10:46,904 INFO L899 garLoopResultBuilder]: For program point L43-3(line 43) no Hoare annotation was computed. [2023-11-06 23:10:46,904 INFO L899 garLoopResultBuilder]: For program point L43-4(line 43) no Hoare annotation was computed. [2023-11-06 23:10:46,904 INFO L895 garLoopResultBuilder]: At program point L43-5(lines 43 45) the Hoare annotation is: (< 0 (+ 2147483650 |ULTIMATE.start_main_~i~2#1|)) [2023-11-06 23:10:46,904 INFO L899 garLoopResultBuilder]: For program point L43-6(lines 43 45) no Hoare annotation was computed. [2023-11-06 23:10:46,909 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:46,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:10:46,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:10:46 BoogieIcfgContainer [2023-11-06 23:10:46,930 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:10:46,931 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:10:46,931 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:10:46,931 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:10:46,932 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:24" (3/4) ... [2023-11-06 23:10:46,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:10:46,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure max [2023-11-06 23:10:46,949 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 23:10:46,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:10:46,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:10:46,951 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:10:47,056 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:10:47,057 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:10:47,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:10:47,060 INFO L158 Benchmark]: Toolchain (without parser) took 23522.88ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 107.4MB in the beginning and 168.0MB in the end (delta: -60.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,061 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory was 86.5MB in the beginning and 86.5MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:10:47,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.02ms. Allocated memory is still 153.1MB. Free memory was 107.1MB in the beginning and 96.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.26ms. Allocated memory is still 153.1MB. Free memory was 96.6MB in the beginning and 94.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,063 INFO L158 Benchmark]: Boogie Preprocessor took 36.25ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,063 INFO L158 Benchmark]: RCFGBuilder took 483.14ms. Allocated memory is still 153.1MB. Free memory was 93.4MB in the beginning and 81.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,064 INFO L158 Benchmark]: TraceAbstraction took 22415.56ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 80.8MB in the beginning and 172.2MB in the end (delta: -91.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:10:47,064 INFO L158 Benchmark]: Witness Printer took 127.04ms. Allocated memory is still 222.3MB. Free memory was 172.2MB in the beginning and 168.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:10:47,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory was 86.5MB in the beginning and 86.5MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.02ms. Allocated memory is still 153.1MB. Free memory was 107.1MB in the beginning and 96.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.26ms. Allocated memory is still 153.1MB. Free memory was 96.6MB in the beginning and 94.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.25ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 483.14ms. Allocated memory is still 153.1MB. Free memory was 93.4MB in the beginning and 81.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22415.56ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 80.8MB in the beginning and 172.2MB in the end (delta: -91.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 127.04ms. Allocated memory is still 222.3MB. Free memory was 172.2MB in the beginning and 168.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 22.3s, OverallIterations: 17, TraceHistogramMax: 40, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 635 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 635 mSDsluCounter, 2442 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1897 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1097 IncrementalHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 545 mSDtfsCounter, 1097 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1221 GetRequests, 805 SyntacticMatches, 47 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7823 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=14, InterpolantAutomatonStates: 250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 48 PreInvPairs, 99 NumberOfFragments, 22 HoareAnnotationTreeSize, 48 FomulaSimplifications, 452 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 2183 NumberOfCodeBlocks, 2127 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2510 ConstructedInterpolants, 0 QuantifiedInterpolants, 3846 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2048 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 16802/22254 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((i == 0) || (0 < i)) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (0 < (2147483649 + i)) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: (0 < (2147483650 + i)) RESULT: Ultimate proved your program to be correct! [2023-11-06 23:10:47,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab54419e-d2f6-451e-9a8a-8b0e175e826b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE