./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/skippedu.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/skippedu.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 578aa1ed819483237cae7cb7b17bc18e9dfff9e081f63e5821fc4a918d7ba90e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:11,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:11,571 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:04:11,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:11,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:11,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:11,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:11,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:11,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:11,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:11,606 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:11,607 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:11,608 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:11,608 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:11,609 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:11,609 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:11,610 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:11,610 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:11,610 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:11,611 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:11,611 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:11,612 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:11,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:11,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:11,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:11,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:11,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:11,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:11,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:11,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:11,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:11,616 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:04:11,617 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:04:11,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:11,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:11,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:11,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:11,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:11,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:11,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:11,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:11,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:11,619 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:11,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:11,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:11,620 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:11,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:11,620 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 578aa1ed819483237cae7cb7b17bc18e9dfff9e081f63e5821fc4a918d7ba90e [2023-11-19 05:04:11,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:11,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:11,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:11,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:11,933 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:11,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/array-tiling/skippedu.c [2023-11-19 05:04:15,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:15,353 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:15,354 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/sv-benchmarks/c/array-tiling/skippedu.c [2023-11-19 05:04:15,362 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/data/c6d148698/3a1b7edaf84a4a3bb4bc025ea7b5278f/FLAGee2c4f949 [2023-11-19 05:04:15,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/data/c6d148698/3a1b7edaf84a4a3bb4bc025ea7b5278f [2023-11-19 05:04:15,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:15,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:15,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:15,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:15,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:15,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c4b2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15, skipping insertion in model container [2023-11-19 05:04:15,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:15,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:15,710 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:15,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:15,746 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:15,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15 WrapperNode [2023-11-19 05:04:15,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:15,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:15,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:15,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:15,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,795 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2023-11-19 05:04:15,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:15,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:15,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:15,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:15,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:15,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:15,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:15,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:15,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (1/1) ... [2023-11-19 05:04:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:15,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:15,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:04:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:04:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:04:15,999 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:16,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:16,399 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:16,472 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:16,477 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:04:16,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:16 BoogieIcfgContainer [2023-11-19 05:04:16,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:16,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:16,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:16,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:16,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:15" (1/3) ... [2023-11-19 05:04:16,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25ac5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:16, skipping insertion in model container [2023-11-19 05:04:16,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:15" (2/3) ... [2023-11-19 05:04:16,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25ac5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:16, skipping insertion in model container [2023-11-19 05:04:16,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:16" (3/3) ... [2023-11-19 05:04:16,494 INFO L112 eAbstractionObserver]: Analyzing ICFG skippedu.c [2023-11-19 05:04:16,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:16,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 05:04:16,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:16,583 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c542c14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:16,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-19 05:04:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 76 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:04:16,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:16,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:04:16,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:16,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash 5550659, now seen corresponding path program 1 times [2023-11-19 05:04:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575565568] [2023-11-19 05:04:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:16,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575565568] [2023-11-19 05:04:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575565568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:16,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007408944] [2023-11-19 05:04:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:16,978 INFO L87 Difference]: Start difference. First operand has 77 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 76 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:17,203 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2023-11-19 05:04:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:04:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:17,217 INFO L225 Difference]: With dead ends: 98 [2023-11-19 05:04:17,217 INFO L226 Difference]: Without dead ends: 83 [2023-11-19 05:04:17,220 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 [2023-11-19 05:04:17,225 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:17,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 162 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-19 05:04:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-19 05:04:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2023-11-19 05:04:17,300 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 4 [2023-11-19 05:04:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:17,301 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2023-11-19 05:04:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2023-11-19 05:04:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:04:17,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:17,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:04:17,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:17,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:17,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash 172080728, now seen corresponding path program 1 times [2023-11-19 05:04:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:17,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567258221] [2023-11-19 05:04:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:17,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:17,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567258221] [2023-11-19 05:04:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567258221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:17,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217968802] [2023-11-19 05:04:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:17,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:17,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:17,529 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:17,657 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2023-11-19 05:04:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:04:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:17,659 INFO L225 Difference]: With dead ends: 144 [2023-11-19 05:04:17,659 INFO L226 Difference]: Without dead ends: 77 [2023-11-19 05:04:17,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:17,662 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:17,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-19 05:04:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-19 05:04:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 45 states have (on average 1.8) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-11-19 05:04:17,677 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 5 [2023-11-19 05:04:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-11-19 05:04:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-11-19 05:04:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:04:17,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:17,680 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 05:04:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:04:17,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:17,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:17,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2143989497, now seen corresponding path program 1 times [2023-11-19 05:04:17,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:17,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453371011] [2023-11-19 05:04:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:17,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453371011] [2023-11-19 05:04:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453371011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396659325] [2023-11-19 05:04:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:17,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:17,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:17,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:17,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:04:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:17,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:17,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:17,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396659325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:04:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 05:04:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647425938] [2023-11-19 05:04:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:04:17,965 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:18,217 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2023-11-19 05:04:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:04:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:18,222 INFO L225 Difference]: With dead ends: 131 [2023-11-19 05:04:18,222 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 05:04:18,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:04:18,224 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 72 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 05:04:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2023-11-19 05:04:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 103 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2023-11-19 05:04:18,245 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 7 [2023-11-19 05:04:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:18,245 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2023-11-19 05:04:18,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2023-11-19 05:04:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:04:18,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:18,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 05:04:18,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:18,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:18,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:18,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2039164918, now seen corresponding path program 1 times [2023-11-19 05:04:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818065497] [2023-11-19 05:04:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:18,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:18,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818065497] [2023-11-19 05:04:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818065497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709181681] [2023-11-19 05:04:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:18,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:18,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:18,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:18,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:04:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:18,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:18,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:18,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:18,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709181681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201269433] [2023-11-19 05:04:18,799 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 05:04:18,799 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:18,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:18,809 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:18,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:19,699 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:20,479 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '835#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (<= 2 ~SIZE~0) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= ~SIZE~0 99999))' at error location [2023-11-19 05:04:20,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:20,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 05:04:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40046313] [2023-11-19 05:04:20,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:04:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:04:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:04:20,482 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:20,848 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2023-11-19 05:04:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:04:20,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:04:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:20,851 INFO L225 Difference]: With dead ends: 143 [2023-11-19 05:04:20,851 INFO L226 Difference]: Without dead ends: 130 [2023-11-19 05:04:20,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:04:20,853 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 146 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:20,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 87 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:04:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-19 05:04:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2023-11-19 05:04:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2023-11-19 05:04:20,868 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 8 [2023-11-19 05:04:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:20,868 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2023-11-19 05:04:20,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2023-11-19 05:04:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:04:20,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:20,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:20,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:21,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:21,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:21,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2039154668, now seen corresponding path program 1 times [2023-11-19 05:04:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123127382] [2023-11-19 05:04:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:21,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123127382] [2023-11-19 05:04:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123127382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064374388] [2023-11-19 05:04:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:21,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:21,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:21,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:21,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:04:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:21,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:21,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:21,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064374388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399015392] [2023-11-19 05:04:21,324 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 05:04:21,325 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:21,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:21,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:21,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:22,093 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1399015392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 16 [2023-11-19 05:04:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40932001] [2023-11-19 05:04:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:04:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:04:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:04:23,043 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:24,108 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2023-11-19 05:04:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:04:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:04:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:24,111 INFO L225 Difference]: With dead ends: 209 [2023-11-19 05:04:24,111 INFO L226 Difference]: Without dead ends: 200 [2023-11-19 05:04:24,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:04:24,113 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 209 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:24,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 98 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:04:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-19 05:04:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 131. [2023-11-19 05:04:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 101 states have (on average 1.495049504950495) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2023-11-19 05:04:24,134 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 8 [2023-11-19 05:04:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2023-11-19 05:04:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2023-11-19 05:04:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:04:24,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:24,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:24,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:24,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:24,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:24,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818535, now seen corresponding path program 1 times [2023-11-19 05:04:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424328385] [2023-11-19 05:04:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:24,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424328385] [2023-11-19 05:04:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424328385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:24,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825270351] [2023-11-19 05:04:24,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:24,468 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:24,618 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2023-11-19 05:04:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:24,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-11-19 05:04:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:24,619 INFO L225 Difference]: With dead ends: 139 [2023-11-19 05:04:24,620 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 05:04:24,620 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 [2023-11-19 05:04:24,621 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 87 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 05:04:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-19 05:04:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.4672897196261683) internal successors, (157), 136 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2023-11-19 05:04:24,633 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 22 [2023-11-19 05:04:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:24,634 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2023-11-19 05:04:24,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2023-11-19 05:04:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:04:24,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:24,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:04:24,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:24,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash 418036600, now seen corresponding path program 1 times [2023-11-19 05:04:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880570510] [2023-11-19 05:04:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:24,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880570510] [2023-11-19 05:04:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880570510] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703559691] [2023-11-19 05:04:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:24,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:24,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:24,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:04:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:24,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:24,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:04:24,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:04:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703559691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712230388] [2023-11-19 05:04:24,871 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-19 05:04:24,872 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:24,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:24,872 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:24,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:29,201 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1712230388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:30,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 5, 5] total 26 [2023-11-19 05:04:30,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467115413] [2023-11-19 05:04:30,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:30,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 05:04:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 05:04:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-19 05:04:30,549 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:33,684 INFO L93 Difference]: Finished difference Result 290 states and 329 transitions. [2023-11-19 05:04:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 05:04:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 05:04:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:33,687 INFO L225 Difference]: With dead ends: 290 [2023-11-19 05:04:33,687 INFO L226 Difference]: Without dead ends: 262 [2023-11-19 05:04:33,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:04:33,690 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 356 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 186 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:04:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-19 05:04:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 182. [2023-11-19 05:04:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 152 states have (on average 1.355263157894737) internal successors, (206), 181 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2023-11-19 05:04:33,708 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 27 [2023-11-19 05:04:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:33,708 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2023-11-19 05:04:33,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2023-11-19 05:04:33,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:04:33,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:33,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:33,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:33,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1993742237, now seen corresponding path program 1 times [2023-11-19 05:04:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881378918] [2023-11-19 05:04:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:04:34,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881378918] [2023-11-19 05:04:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881378918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227914886] [2023-11-19 05:04:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:34,002 INFO L87 Difference]: Start difference. First operand 182 states and 206 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:34,095 INFO L93 Difference]: Finished difference Result 189 states and 213 transitions. [2023-11-19 05:04:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:34,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-19 05:04:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:34,097 INFO L225 Difference]: With dead ends: 189 [2023-11-19 05:04:34,097 INFO L226 Difference]: Without dead ends: 187 [2023-11-19 05:04:34,098 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 [2023-11-19 05:04:34,100 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:34,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 147 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-19 05:04:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-19 05:04:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 155 states have (on average 1.3483870967741935) internal successors, (209), 184 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2023-11-19 05:04:34,130 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 29 [2023-11-19 05:04:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2023-11-19 05:04:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2023-11-19 05:04:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:04:34,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:34,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:04:34,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:34,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 192248123, now seen corresponding path program 1 times [2023-11-19 05:04:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894630627] [2023-11-19 05:04:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:34,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894630627] [2023-11-19 05:04:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894630627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:34,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072135447] [2023-11-19 05:04:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:34,241 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:34,267 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2023-11-19 05:04:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:34,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-19 05:04:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:34,269 INFO L225 Difference]: With dead ends: 185 [2023-11-19 05:04:34,269 INFO L226 Difference]: Without dead ends: 184 [2023-11-19 05:04:34,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:34,272 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 64 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 [2023-11-19 05:04:34,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 64 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-19 05:04:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-19 05:04:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 155 states have (on average 1.3419354838709678) internal successors, (208), 183 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 208 transitions. [2023-11-19 05:04:34,286 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 208 transitions. Word has length 32 [2023-11-19 05:04:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:34,288 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 208 transitions. [2023-11-19 05:04:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 208 transitions. [2023-11-19 05:04:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:04:34,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:34,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:34,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:04:34,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash -472076531, now seen corresponding path program 1 times [2023-11-19 05:04:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:34,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369380978] [2023-11-19 05:04:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:34,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369380978] [2023-11-19 05:04:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369380978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763597820] [2023-11-19 05:04:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:34,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:34,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:34,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:04:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:34,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:34,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:34,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763597820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:34,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1753530327] [2023-11-19 05:04:34,577 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-11-19 05:04:34,577 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:34,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:34,578 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:34,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:35,333 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1753530327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 25 [2023-11-19 05:04:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481213571] [2023-11-19 05:04:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:36,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 05:04:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 05:04:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:04:36,146 INFO L87 Difference]: Start difference. First operand 184 states and 208 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:37,680 INFO L93 Difference]: Finished difference Result 286 states and 330 transitions. [2023-11-19 05:04:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 05:04:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-19 05:04:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:37,683 INFO L225 Difference]: With dead ends: 286 [2023-11-19 05:04:37,683 INFO L226 Difference]: Without dead ends: 258 [2023-11-19 05:04:37,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:04:37,685 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 165 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:37,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 109 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:04:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-19 05:04:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2023-11-19 05:04:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 173 states have (on average 1.323699421965318) internal successors, (229), 201 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2023-11-19 05:04:37,702 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 32 [2023-11-19 05:04:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:37,702 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2023-11-19 05:04:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2023-11-19 05:04:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 05:04:37,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:37,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:37,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:37,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:04:37,922 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:37,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1749470403, now seen corresponding path program 1 times [2023-11-19 05:04:37,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:37,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397929548] [2023-11-19 05:04:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:04:38,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:38,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397929548] [2023-11-19 05:04:38,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397929548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922513041] [2023-11-19 05:04:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:38,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:38,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:04:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:38,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:04:38,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:04:38,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922513041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253780731] [2023-11-19 05:04:38,193 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-11-19 05:04:38,194 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:38,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:38,194 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:38,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:41,996 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:43,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4274#(and (<= 1 ~SIZE~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post11#1|))' at error location [2023-11-19 05:04:43,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:43,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 05:04:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643798034] [2023-11-19 05:04:43,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:43,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:04:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:04:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2023-11-19 05:04:43,600 INFO L87 Difference]: Start difference. First operand 202 states and 229 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:43,764 INFO L93 Difference]: Finished difference Result 403 states and 457 transitions. [2023-11-19 05:04:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-19 05:04:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:43,766 INFO L225 Difference]: With dead ends: 403 [2023-11-19 05:04:43,766 INFO L226 Difference]: Without dead ends: 207 [2023-11-19 05:04:43,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-11-19 05:04:43,768 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 14 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:43,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 267 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-19 05:04:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-11-19 05:04:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 176 states have (on average 1.3181818181818181) internal successors, (232), 204 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2023-11-19 05:04:43,782 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 33 [2023-11-19 05:04:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:43,783 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2023-11-19 05:04:43,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2023-11-19 05:04:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 05:04:43,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:43,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:43,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:44,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:04:44,010 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:44,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1174881543, now seen corresponding path program 2 times [2023-11-19 05:04:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995860382] [2023-11-19 05:04:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:44,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:04:44,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995860382] [2023-11-19 05:04:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995860382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102967840] [2023-11-19 05:04:44,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:04:44,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:44,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:44,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:44,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:04:44,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:04:44,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:04:44,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:04:44,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:04:44,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:04:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102967840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1292742019] [2023-11-19 05:04:44,319 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-11-19 05:04:44,320 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:44,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:44,320 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:44,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:47,459 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:49,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5154#(and (<= 1 ~SIZE~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post11#1|))' at error location [2023-11-19 05:04:49,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:49,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-11-19 05:04:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813171996] [2023-11-19 05:04:49,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:49,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:04:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:04:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:04:49,042 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:49,340 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2023-11-19 05:04:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:04:49,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-19 05:04:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:49,342 INFO L225 Difference]: With dead ends: 218 [2023-11-19 05:04:49,342 INFO L226 Difference]: Without dead ends: 206 [2023-11-19 05:04:49,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 05:04:49,344 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 109 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:49,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 129 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-19 05:04:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 139. [2023-11-19 05:04:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 112 states have (on average 1.3125) internal successors, (147), 138 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2023-11-19 05:04:49,355 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 36 [2023-11-19 05:04:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:49,355 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2023-11-19 05:04:49,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2023-11-19 05:04:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 05:04:49,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:49,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:49,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:49,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:49,566 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:49,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:49,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1969468162, now seen corresponding path program 1 times [2023-11-19 05:04:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:49,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997009844] [2023-11-19 05:04:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:49,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:49,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997009844] [2023-11-19 05:04:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997009844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63740541] [2023-11-19 05:04:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:49,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:49,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:04:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:49,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:04:49,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:49,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63740541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:49,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:04:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 05:04:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998716852] [2023-11-19 05:04:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:49,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:04:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:04:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:04:49,765 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:49,937 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2023-11-19 05:04:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-19 05:04:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:49,939 INFO L225 Difference]: With dead ends: 142 [2023-11-19 05:04:49,939 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 05:04:49,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:04:49,941 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:49,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 30 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 05:04:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2023-11-19 05:04:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 125 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2023-11-19 05:04:49,953 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 38 [2023-11-19 05:04:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2023-11-19 05:04:49,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2023-11-19 05:04:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 05:04:49,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:49,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:49,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:50,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:50,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:50,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -923970798, now seen corresponding path program 1 times [2023-11-19 05:04:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74648198] [2023-11-19 05:04:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:50,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74648198] [2023-11-19 05:04:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74648198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969621975] [2023-11-19 05:04:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:50,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:50,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:50,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:04:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:50,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:04:50,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:50,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969621975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1501417158] [2023-11-19 05:04:50,441 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-19 05:04:50,442 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:50,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:50,442 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:50,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:55,050 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:57,076 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6210#(= 1073741824 |ULTIMATE.start_main_~i~0#1|)' at error location [2023-11-19 05:04:57,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:57,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-19 05:04:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221137544] [2023-11-19 05:04:57,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:04:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:04:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=588, Unknown=4, NotChecked=0, Total=702 [2023-11-19 05:04:57,078 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:57,342 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2023-11-19 05:04:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:04:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-19 05:04:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:57,346 INFO L225 Difference]: With dead ends: 208 [2023-11-19 05:04:57,346 INFO L226 Difference]: Without dead ends: 195 [2023-11-19 05:04:57,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=130, Invalid=676, Unknown=6, NotChecked=0, Total=812 [2023-11-19 05:04:57,350 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 81 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:57,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 55 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-19 05:04:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 168. [2023-11-19 05:04:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 165 states have (on average 1.103030303030303) internal successors, (182), 167 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2023-11-19 05:04:57,363 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 39 [2023-11-19 05:04:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:57,363 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2023-11-19 05:04:57,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2023-11-19 05:04:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 05:04:57,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:57,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:57,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:57,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:57,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash 740761927, now seen corresponding path program 1 times [2023-11-19 05:04:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:57,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295725041] [2023-11-19 05:04:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:04:57,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295725041] [2023-11-19 05:04:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295725041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636107036] [2023-11-19 05:04:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:57,678 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:57,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:04:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:57,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:57,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:04:57,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636107036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:57,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:04:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 05:04:57,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323447183] [2023-11-19 05:04:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:57,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:57,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:04:57,789 INFO L87 Difference]: Start difference. First operand 168 states and 182 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:57,916 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2023-11-19 05:04:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 43 [2023-11-19 05:04:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:57,918 INFO L225 Difference]: With dead ends: 169 [2023-11-19 05:04:57,918 INFO L226 Difference]: Without dead ends: 161 [2023-11-19 05:04:57,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:04:57,920 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:57,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 32 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-19 05:04:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-19 05:04:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 160 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 172 transitions. [2023-11-19 05:04:57,933 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 172 transitions. Word has length 43 [2023-11-19 05:04:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:57,933 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 172 transitions. [2023-11-19 05:04:57,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2023-11-19 05:04:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:04:57,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:57,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:57,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 05:04:58,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:58,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -864956064, now seen corresponding path program 1 times [2023-11-19 05:04:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152426120] [2023-11-19 05:04:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 05:04:58,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:58,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152426120] [2023-11-19 05:04:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152426120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:58,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:58,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193954038] [2023-11-19 05:04:58,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:58,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:58,267 INFO L87 Difference]: Start difference. First operand 161 states and 172 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:58,333 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2023-11-19 05:04:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 05:04:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:58,335 INFO L225 Difference]: With dead ends: 161 [2023-11-19 05:04:58,335 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 05:04:58,335 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 [2023-11-19 05:04:58,336 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:58,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 05:04:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-19 05:04:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2023-11-19 05:04:58,347 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 66 [2023-11-19 05:04:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:58,348 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2023-11-19 05:04:58,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:58,348 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2023-11-19 05:04:58,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:04:58,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:58,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:58,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:04:58,349 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:04:58,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:58,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1631072820, now seen corresponding path program 1 times [2023-11-19 05:04:58,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:58,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540452130] [2023-11-19 05:04:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:58,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 05:04:58,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540452130] [2023-11-19 05:04:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540452130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643989441] [2023-11-19 05:04:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:58,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:58,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:58,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:04:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:58,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:04:58,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:59,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:04:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643989441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:59,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [503605362] [2023-11-19 05:04:59,196 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-19 05:04:59,196 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:59,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:59,197 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:59,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:05:02,580 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:05:04,117 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7907#(= 1073741824 |ULTIMATE.start_main_~i~0#1|)' at error location [2023-11-19 05:05:04,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:05:04,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:05:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2023-11-19 05:05:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066764085] [2023-11-19 05:05:04,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:05:04,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:05:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:05:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 05:05:04,120 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 24 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 24 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:04,928 INFO L93 Difference]: Finished difference Result 548 states and 590 transitions. [2023-11-19 05:05:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:05:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 24 states have internal predecessors, (169), 0 states have call successors, (0), 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 71 [2023-11-19 05:05:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:04,931 INFO L225 Difference]: With dead ends: 548 [2023-11-19 05:05:04,932 INFO L226 Difference]: Without dead ends: 397 [2023-11-19 05:05:04,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 179 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=370, Invalid=2492, Unknown=0, NotChecked=0, Total=2862 [2023-11-19 05:05:04,934 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 378 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:04,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 30 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:05:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-19 05:05:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 387. [2023-11-19 05:05:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.072538860103627) internal successors, (414), 386 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 414 transitions. [2023-11-19 05:05:04,959 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 414 transitions. Word has length 71 [2023-11-19 05:05:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:04,960 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 414 transitions. [2023-11-19 05:05:04,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 24 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 414 transitions. [2023-11-19 05:05:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 05:05:04,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:04,962 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:04,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 05:05:05,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:05,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-11-19 05:05:05,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 335840764, now seen corresponding path program 2 times [2023-11-19 05:05:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:05,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185818520] [2023-11-19 05:05:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-19 05:05:06,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185818520] [2023-11-19 05:05:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185818520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160740170] [2023-11-19 05:05:06,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:05:06,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:06,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:06,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:06,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ca225b-ffa6-4ff0-915f-26141fcb4c65/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:05:06,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:05:06,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:05:06,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:05:06,120 INFO L285 TraceCheckSpWp]: Computing forward predicates...